The model universally accepted was Kepler's heliocentric solar system with elliptical orbits. |
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The planet, more than twice the size of Jupiter, orbits two stars, a pulsar and a white dwarf that linked together about a billion years ago. |
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He therefore accepted Kepler's theory of elliptical orbits for the planets and tested Kepler's laws by direct observation. |
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Multiple collisions involving red giants and other stars might yield the random orbits her team has observed. |
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For one thing, astronomers discovered the Kuiper belt, a teeming ensemble of miniature worlds within which Pluto orbits. |
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The lacrimal bones are thin bones that form the anterior portion of the medial walls of the individual orbits. |
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Spacecraft orbiting Earth can be found in several different types of orbits based on their altitude and orientation. |
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After climbing into space on a single launcher, the satellites will adopt orbits passing over the Earth's poles. |
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He's based this idea on a study of the angle, or inclination, of asteroid orbits. |
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Static information such as semi-major axis of ellipse, apogee and perigee altitudes, and anomalistic and nodal periods of satellite orbits. |
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This creates increased atmospheric drag on spacecraft in low orbits, shortening their orbital lifetime. |
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Before I do this, I have to revisit science concepts and make sure I understand orbits, rotations, revolutions and seasons. |
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Simple accounts of the Solar System often start by saying that the Earth orbits the Sun, and as it does so the Moon revolves around the Earth. |
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Discovery's journey, which began with a lift-off on July 26, spanned 219 orbits of Earth and 5.8 million miles. |
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In contrast, Jupiter-family comets tend to have predictable, well-determined orbits with short periods and low inclinations. |
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The first problem Galileo attacked at Florence was to determine orbits and periods for Jupiter's four satellites. |
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Most of the larger asteroids and comets are also in stable orbits around the sun. |
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Ceres was initially considered to be a planet until other asteroids with similar orbits were found. |
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As time goes by, astronomers have found planets in larger and larger orbits. |
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As the moon orbits the spinning earth, there is a cycle of two high tides and two low tides about every 25 hours. |
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Numerical studies show that lunisolar perturbations control stability of equilibria for orbits with semimajor axes exceeding 1.4 Earth radii. |
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This newly discovered planet orbits a star called Tau Gruis, which is about 100 light-years away. |
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In practice, the spacecraft deviated significantly even from predicted orbits that took into account the gravitational forces of the mascons. |
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These thrusters allowed the spacecraft to modify their orbits with less propellant than is the case with chemical engines. |
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After one and a half orbits the Saturn thrusters fired and the astronauts began their odyssey. |
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As the newly launched Sputnik satellite orbits earth, a strange meteorite approaches the planet. |
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Instead, that debris continued to orbit the Sun, most of it between the orbits of Mars and Jupiter, a region known as the asteroid belt. |
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The supraorbital torus is lost in most modern humans, and ridging above the orbits in general is very reduced. |
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The best records always reside on their own little planet, a few orbits away from the rest of the music in their midst. |
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These are all in circular prograde orbits near Neptune's equatorial plane, and they probably formed in place. |
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But biosatellites could be positioned in a variety of orbits, exposing them to various kinds and amounts of radiation. |
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He discovered that in 7 cycles of 12 years, Jupiter had completed seven and one twelfth orbits, giving its sidereal period as 11.859 years. |
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The faster the Earth orbits the Sun, the fewer solar days per sidereal year we see. |
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They asserted that it drew close enough to disrupt the orbits of rocky objects, sending a shower of bolides toward the inner planets. |
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They show a number of typical adaptations for aquatic life, such as dorsal orbits and nares and somewhat shortened limbs. |
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Given data on planetary orbits, conventional GA could only perform mundane tasks like sorting them into ascending order of diameter. |
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This means that the spaceship orbits slower than it would if the Moon wasn't there. |
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The footprint as well as several consecutive orbits of the Mir space station are shown on the map. |
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The best theories suggest that gravitational nudges by Jupiter can throw main-belt asteroids into these smaller, more elliptical orbits. |
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These planets have circular orbits similar to the orbits of planets in our solar system. |
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Today we know it is gravity that holds the planets and stars in their orbits making them appears to be hung on nothing. |
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Most planets still had regular orbits, and cycles of days, months, and years. |
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Those objects that pose a threat will have their orbits altered by spacecraft made on the Moon. |
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No photograph can prepare you for this, no understanding of orbits and celestial mechanics. |
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The few planets maintain their orbits with great regularity, and we can make very good predictions where they will be at some time in the future. |
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They also know that orbits of planets are elliptical and not circular, which of course is another advanced bit of information. |
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The object will probably complete six orbits around Earth before returning to a solar orbit next summer, Chodas says. |
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The craft itself remained in orbit for nearly six months, and completed 1400 orbits of the Earth. |
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Yang's trip lasted more than twenty-one hours and took him on fourteen orbits around the Earth. |
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This means that after eight of our orbits Venus has circuited the Sun 13 times, and returns to more or less the same position relative to us. |
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During 6 of the 16 daily orbits, the Foton spacecraft will be in a suitable orbital position for Kiruna to receive signals from it. |
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The capsule is expected to remain in orbit for 14 orbits and 21 hours before re-entry and a parachute landing in inner Mongolia. |
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The electrons do have different discrete energies, but they do not follow circular orbits. |
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Rydberg atoms do not move or collide because they are laser cooled, but the electron orbits of adjacent atoms can overlap. |
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The size of the atom is defined not by hard boundaries but by how far the electron orbits reach. |
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The electrons are released at this temperature and they are able to return to their normal atomic orbits. |
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Flying subatomic particles collide with other atoms in their path, knocking electrons out of their orbits. |
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For many atoms, the combinations of electrons in their orbits cancel each other out. |
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I know I've read about electrons shifting orbits quite a bit before, but I'm too foggy to think of where and how right now. |
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A classical physicist would have supposed that electrons encircling a nucleus could do so in orbits whose radii could take any value. |
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Atoms give up excess internal energy by giving off photons as electrons return to lower energy orbits. |
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Scientists used to believe that electrons circled around the nucleus in planet-like orbits. |
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Orbital inflammation is often caused by sinus infection because of the multiple venous channels that exists between the sinuses and orbits. |
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The major reptile groups are classified according to the pattern of openings in the skull roof behind the orbits. |
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The margins of the orbits are raised above the general surface of the skull. |
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Titan is slightly bigger than the planet Mercury, and is only called a moon because it orbits the giant planet Saturn rather than the Sun. |
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And space-based and ground-based telescopes will take photos of Discovery as it orbits. |
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It orbits very close to its star, about one-fiftieth the distance between the Earth and the sun. |
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For all-purpose refinishing, the ideal tool is an orbital sander that oscillates at around 8,400 orbits per minute. |
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They have a traditional belief in a heliocentric system and in elliptical orbits of astronomical phenomena. |
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Astrology is a great key to determining the true sequence of planetary orbits, both heliocentrically and geocentrically. |
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Some are lost to outer space while others enter recurring orbits around the Sun. |
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In the next two chapters it will reveal to us how to scale the hodographs for elliptical orbits. |
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They found a Jupiter-like planet orbiting a sun-like star at nearly the same distance that Jupiter orbits our sun. |
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Venus orbits around the sun faster than the earth, which also has a longer distance to cover. |
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All except for 47 Ursae Majoris are gas giants orbiting closer to their suns than Mercury orbits our sun. |
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The nasal bone is a projection that lies between the two orbits and is below the superciliary crest. |
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He suspects superplastic satellite materials will find new applications in space because low-Earth orbits corrode normal plastics. |
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Long-period comets can have orbits ranging from eccentric ellipses to parabolas to even modest hyperbolas. |
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On the space station that orbits Solaris, paranoia has evolved into a degree of mistrust, bordering on terror. |
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This will be the first time lunar swingbys have been used to manipulate orbits of more than one spacecraft. |
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Also, relativistic advance of periastron has been studied and confirmed in certain binary stars with elliptical orbits. |
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The orbital septum, a connective tissue reflection of the periosteum, inserts into the eyelids and separates them from the orbits. |
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First, the relative inclination of the two orbits means their paths do not intersect. |
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The existence of such black holes has been inferred in cases where the black hole pulls gas of a companion star that orbits around it. |
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Most of these are in stable orbits around the Sun and are really just small planets, or planetoids. |
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Kepler connected the planetary orbits with the five regular polyhedra, or Platonic solids. |
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They are all in orbits that intersect the Earth's orbit and they are all large enough to cause widespread damage in an Earth impact. |
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The skull is low, with postfrontal ridges and dorsal orbits, suggesting the ability to see above the water line. |
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The ratio of the squares of the periods of two planets is directly proportional to the ratio of the cubes of the radii of their orbits. |
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The time that the four Galilean satellites take to circuit that planet can be measured, and also the sizes of their orbits. |
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Past discoveries of planets in other solar systems had wildly eccentric orbits or orbited very close to the star. |
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Pits in front of the orbits, called preorbital vacuities, are often present. |
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Those distortions guide the moving masses along straight-line geodesics, which look like the curved trajectories that physicists call orbits. |
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Such a body rotates once about its axis in the same length of time that it orbits the primary. |
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Such orbits, however, are not optimum as staging points for higher geosynchronous orbit or deep space. |
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Numerous small, distant satellites in both prograde and retrograde orbits have been discovered recently. |
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As Earth orbits the sun, the tubes are lashing through space like water from a demented lawn sprinkler. |
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The protoplanet candidate orbits about 70 times further from its star than Earth does from the Sun. |
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Then its own ion engine will take it, gradually, into bigger and bigger orbits, until the gravitational pull of the Moon takes over. |
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For about a third of every ninety-minute orbit, as Earth eclipses the Sun, the station orbits in darkness. |
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Asteroids have more elongated or egg-shaped orbits bringing some of them onto paths which cross the Earth's orbit. |
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Newton favoured comets having parabolic orbits, but Halley believed that elliptical orbits might exist. |
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He had achieved this by the time he was eighteen but at this stage he did not know even that the moon and planets described elliptical orbits. |
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The planet orbits the M class red dwarf star Gliese 436, located only 33 light years away, in our own galactic neighborhood. |
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Common sites of metastases include liver, bone, bone marrow, extradural space, orbits and skin. |
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Throughout the 1800s, Newton's law of gravitation was applied with increasing precision to the observed orbits of planets and double stars. |
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Six years later he was awarded a doctorate for a thesis which studied double stars, in particular studying their orbits. |
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Figure 2 is a diagram of the orbits of the Earth and a superior planet, such as Mars. |
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In drifting, they may sweep through locations where other moons disturb them, making their orbits eccentric or inclined relative to the planet's equator. |
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As Kepler had pointed out, objects in low orbits will complete an orbit around the earth faster than those in high orbits, even though their linear velocity is lower. |
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For example, an electron can exist simultaneously in different orbits. |
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If one notices, the shuttle takes a circumpolar route as it orbits. |
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At these higher orbits it can take many hours to complete a single orbit. |
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Unlike most other ELINT satellites, which operate in geosynchronous orbits, Mercurys are placed in even higher orbits and move in complex, elliptical patterns. |
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Some orbits are so eccentric that they never loop back around again. |
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Planets consisting of diamond have been identified before, but this is the first one that orbits a star. |
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We think they're searching exotic circumlunar orbits at the moment. |
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Once you understand elliptical orbits in the classical model, the relativistic model is really a minor modification of it in the cases we are talking about. |
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As that matter orbits the black hole, it heats up and emits a lot of light. |
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It orbits the sun on a highly elliptical path which, even at its perihelion, puts the planetoid more than twice the average distance from the Sun to Pluto. |
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With a flick of his fingers, Balen sends the orbits spinning. |
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All six are retrograde orbits with inclinations greater than 90 degrees. |
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He says the ironies, the paradoxes, of the normalization of the Mars orbit and the other orbits, show that we have an elliptical orbit, with constantly non-uniform action. |
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The methods include the study of stable and unstable manifolds, bifurcations, index and degree, and construction of orbits as minima and minimaxes of action functionals. |
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Of particular interest to me was his discussion of the chaotic motion of the planetary orbits and of the slingshot effect that can give spacecraft a planetary boost. |
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Mars is an average of 48 million miles from Earth, though the distance can vary greatly depending on where the two planets are in their orbits around the sun. |
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Shenzhou I completed fourteen orbits and returned to earth after just twenty-one hours, but even so it achieved a big step forward for the Chinese. |
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As it orbits, LOLA will send out laser pulses 28 times per second. |
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When declared operational in 1964, Transit consisted of five satellites in offset polar orbits circling the Earth at an altitude of about 670 miles. |
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Pitting allows atomic oxygen, present in low Earth orbits, to react with an exposed surface, causing corrosion and reducing the serviceable lifetimes of satellites. |
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If patients show signs of increased intracranial pressure or nuchal rigidity, immediate CT scanning of the brain, orbits, and sinuses should be performed. |
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Satellite orbits were computed using a GPS almanac-like representation, that is, six Keplerian parameters plus the secular drift of the right ascension of the ascending node. |
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By the time their orbits take them close to the Sun so they become bright, they are lost in the Sun's glare and require a space-based coronagraph like that on SOHO to be seen. |
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According to Schrodinger, electrons confined in their orbits would set up standing waves and you could describe only the probability of where an electron could be. |
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This is the process in which a proton is converted into a neutron by the nucleus capturing a negative electron from one of the inner orbits of its atom. |
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The clinical features include misshapen skull caused by coronal suture synostosis, wide-set eyes, midface hypoplasia, choanal stenosis, and shallow orbits. |
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He states that geostationary satellites must violate Kepler's first law, because they must have circular orbits when the first law demands that orbits be ellipses. |
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How this connects up to conventional conic orbits is not entirely clear. |
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If the Moon orbited Earth in exactly the same plane that Earth orbits the Sun, we'd get a solar eclipse every New Moon and a lunar eclipse every Full Moon. |
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Their immediate worlds, his in Congress, hers in Braintree, had different orbits. |
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Venus orbits the Sun within the habitable zone, and is only slightly smaller than Earth. |
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But comets, thanks to their eccentric and frequently long orbits, are trickier to study up close. |
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Making the orbits elliptical made the Copernican system more accurate. |
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Kepler-10c, which is the proper name for the mega-Earth, orbits its star much closer than our planet does. |
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Most stars in the Milky Way have humdrum lives, tracing slow predictable orbits around the galactic center. |
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This excess energy is emitted in quanta of electromagnetic radiation that have exactly same energy as the difference in energy between the orbits jumped by the electron. |
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The planets are in orbits around the sun which are almost circular. |
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The algorithms ran their determined courses, and our thoughts followed one after another, as mechanical and as predictable as the planets in their orbits. |
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While there are a number of other missions that have successfully aerobraked into more circular and less elliptical orbits, the maneuver is never a cakewalk. |
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Specific problems which Lexell studied in astronomy were his calculation of the solar parallax and his calculation of the orbits of several comets. |
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In addition, most upper stages that are used to propel systems to high orbits or even into interplanetary trajectories are also solid-fuel systems. |
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Satellites normally orbit planets in Keplerian orbits, named after Johannes Kepler, who wrote the mathematical equations that describe how satellites move. |
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By tracing the orbits of the 20-odd fragments back in time, the astronomers infer that the present body had a diameter of 2 kilometers. |
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Metoposaurids have long, dorsoventrally strongly flattened skulls and small orbits that are placed far forward on the cranium. |
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This invalidated Bohr's model, with its neat, clearly defined circular orbits. |
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He concluded, based on Tycho Brahe's observations of the orbit of Mars, that the orbits were ellipses. |
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A distinctive trait was the rectangular eye orbits, similar to modern Ainu people. |
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Mars is a planet that orbits the Sun and has never been visited by man. |
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Heavenly motions no longer needed to be governed by a theoretical perfection, confined to circular orbits. |
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In 1679, Newton began to consider gravitation and its effect on the orbits of planets with reference to Kepler's laws of planetary motion. |
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If there are other stars orbiting a black hole, their orbits can be used to determine the black hole's mass and location. |
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Dolphin skulls have small eye orbits, long snouts, and eyes placed on the sides of its head. |
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Their skull has small eye orbits, small, blunt snouts, and eyes placed on the sides of the head. |
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Pinniped skulls have large eye orbits, short snouts and a constricted interorbital region. |
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Wavelength determines the size of the orbits of water molecules within a wave, but water depth determines the shape of the orbits. |
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On the other hand, the orbits of water molecules in waves moving through shallow water are flattened by the proximity of the sea surface bottom. |
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The orbits are arranged so that at least six satellites are always within line of sight from almost everywhere on the Earth's surface. |
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Viewed from a vantage point above the north poles of both the Sun and Earth, Earth orbits in a counterclockwise direction about the Sun. |
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The stability can result in orbits around just L4 or L5, known as Tadpole orbits, where trojans can be found. |
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It can also result in orbits that encircle L3, L4, and L5, known as horseshoe orbits. |
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The lunar day is longer than the Earth day because the Moon orbits in the same direction the Earth spins. |
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The next step is to accommodate the harmonic terms due to the elliptical shape of the orbits. |
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A distinctive trait was the rectangular eye orbits, similar to those of modern Ainu people. |
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Our solar system orbits within the Milky Way, a barred spiral galaxy that is a prominent member of the Local Group of galaxies. |
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Amateurs can make occultation measurements that are used to refine the orbits of minor planets. |
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We review two main scenarios that may have implanted Sedna, 2004 VN112 and 2000 CR105 on their current peculiar orbits. |
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And the vacant orbits gazed back at her, tonguelessly declaring their inexhaustible resources. |
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By contrast, a calmer birth would result in more regular star orbits. |
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In this model, gravitational interaction among the five Neptunes stirs up their orbits, transforming them from circular to highly elliptical. |
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The planet is about the size of Neptune and orbits the brightest star in a double star system 425 light years from Earth. |
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The DSCOVR spacecraft orbits around the L1 Lagrange point directly between Earth and the sun. |
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We therefore need to track asteroids to see how reradiated energy might change their orbits. |
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Pluto and Charon are sometimes described as a binary system because the barycenter of their orbits does not lie within either body. |
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The Santilli-Shillady orbits, the oo-shaped orbits, go beyond a way of speaking, they are a condition for the movement of the electron pair. |
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Until the discovery, no one realised that rocky planets could form stable orbits around one member of a binary star system. |
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Wide binary stars are separated by as much as one light-year in their orbits, farther apart than some stellar nurseries are wide. |
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A hot Jupiter is a massive extrasolar planet that orbits very close to its parent star. |
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He admits, however, that he was unable to master the mathematics required to show how elliptical orbits arise from an inverse-square law. |
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Unlike most spacecraft, which use thrusters to adjust their orbits, it has a highly efficient propulsion system called an ion engine. |
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The center of everything is God out of the center I see luminous iridescences shot at the orbits of stars and of the innermost world. |
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Later he made micrometrical observations of comets and double stars with the 15-inch refractor in order to determine their orbits. |
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Chariklo orbits the sun but doesn't meet the other standards, while dwarf planet Pluto hasn't cleared its orbit of space debris. |
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The cockeyed duo may provide insight into the peculiar orbits of some exoplanets. |
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The dynamic orbits are modelled in order to obtain information concerning periodic or nonperiodic behaviour of rotary system. |
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Conversely, cavefish raised in the same conditions showed no increase in variation in the size of their eye orbits. |
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Valence electrons, which are located in outer orbits, participate in chemical bonds. |
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It orbits a star 64 light years from the Sun in the constellation of Vulpecula the Fox. |
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Their world orbits a gas giant planet similar to Jupiter that cannot support life. |
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The majority of known planets moving around giant stars have large and circular orbits. |
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As the satellite orbits at 650 kilometres above Earth, the FTS is poised to take sequences of atmospheric absorption spectra twice a day, during sunrise and sunset. |
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Because many communication satellites have equatorial orbits, launches from French Guiana are able to take larger payloads into space than from spaceports at higher latitudes. |
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For example, a unit should define and label orbits optimized for a primary need of persistent observation, maximizing coverage area or nonpersistent observation mapping. |
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They now have several satellites located in semistationary orbits at strategic locations around the world instead of one satellite circulating the globe. |
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The stars move along random orbits with no preferred direction. |
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In most cases, this results in an unstable interaction, in which the bodies exchange momentum and shift orbits until the resonance no longer exists. |
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The spacecraft will make a comprehensive study of the solar wind, utilizing dual lunar swingby orbits to sample regions close to and farther away from the Earth. |
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I've asked various people, particularly Shuttle guys, that have been many orbits around China in the daytime, and the ones I've talked to didn't see it. |
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When the accreting object is a neutron star or a black hole, the gas in the inner accretion disc orbits at very high speeds because of its proximity to the compact object. |
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The precise measurement of latitude requires an understanding of the gravitational field of the Earth, either to set up theodolites or to determine GPS satellite orbits. |
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This week, they announced that they had found the first Jupiterlike planet orbiting a star at nearly the same distance that Jupiter orbits the sun. |
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Heavily cratered and irregularly shaped, Janus orbits Saturn just beyond the F ring and only 50km farther away than its co-orbital moon, Epimetheus. |
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Kepler was an astronomer who, using the accurate observations of Tycho Brahe, proposed that the planets move around the sun not in circular orbits, but in elliptical ones. |
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In astronomy, chaoslike phenomena include the orbits of asteroids, comets, and satellites, where small disturbances can have dramatic and complex effects. |
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At twice the mass of Earth, the planet orbits one of the stars in the binary system at almost exactly the same distance from which Earth orbits the sun. |
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The jugals do not intersect the orbits as they are excluded by the postorbitals and maxillaries, which meet to form the posterior margins of the orbits. |
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After his three earth orbits in 1962, American astronaut John Glenn successfully landed in the nearby ocean and was brought back ashore to Grand Turk island. |
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These icy bodies belong to a group of Kuiper-belt residents called Plutinos because like Pluto, they make two orbits about the sun in the time that Neptune makes three. |
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Existentially ghosts lie between fact and fiction, between the orbits of believer and nonbeliever, and provide bounteous fodder for storytelling, literature, and film. |
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Astronomers spotted icy rings encircling the planetoid Chariklo, a 250-kilometerwide hunk of ice and rock that orbits the sun between Saturn and Uranus. |
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