Based on extrasolar planet discoveries in our own stellar neighborhood, astronomers predicted that seventeen planets should have been discovered. |
|
Surprisingly, x rays do not penetrate Earth's atmosphere, so astronomers must place x-ray telescopes in space. |
|
No doubt some people did feel this way, especially astronomers, computists, and recusants. |
|
For one thing, astronomers discovered the Kuiper belt, a teeming ensemble of miniature worlds within which Pluto orbits. |
|
There has been an explosion in the number of astronomers scanning the skies for the telltale wobble of distant worlds. |
|
A dark patch on the surface of Titan, moon of Saturn, might be a lake filled with liquid hydrocarbons, astronomers have said. |
|
Maya astronomers observed the movements of the sun, moon, and planets, made astronomical calculations, and devised almanacs. |
|
A US and Netherlands-led team of astronomers using the Hubble Space Telescope have identified 19 new examples of gravitationally lensed galaxies. |
|
For nearly a decade, astronomers have patiently watched Rho Cassiopeiae, a bloated, relatively cool star 500,000 times brighter than the sun. |
|
In ancient days astronomers might have read ominous portends in that lidless eye. |
|
Everyone believed that mathematicians and astronomers would provide the solution but it is not to be. |
|
The tables of logarithms which he published included logarithms of trigonometric functions for use by astronomers. |
|
In this way, astronomers will perform very precise astrometry to detect the reflex motion of stars due to orbiting planets. |
|
Dozens of astronomers came to see the eclipse, but there were thousands and thousands of people outside to watch it. |
|
Until 10 years ago, most astronomers did not believe stardust could enter the Solar System. |
|
Few astronomers have made so many important contributions to so many different fields in astronomy. |
|
These galaxies are so young that astronomers can still see a flurry of stars forming within them. |
|
Kamalakara was an Indian astronomer and mathematician who came from a family of famous astronomers. |
|
To overcome this problem, the astronomers devised a new and highly efficient strategy. |
|
Galileo wrote to astronomers in other cities and compared their observations with his own. |
|
|
Such tenets never held back the great Arab astronomers and mathematicians of the Middle Ages. |
|
The tools are also helping astronomers measure the rate of birth of stars in extremely red and distant galaxies. |
|
A team of international astronomers has found five new moons orbiting Neptune. |
|
As time goes by, astronomers have found planets in larger and larger orbits. |
|
Here, Hubble astronomers have uncovered, for the first time, a population of infant stars. |
|
This makes it the most distant extrasolar planet detected by astronomers to date. |
|
To astronomers, a transit occurs whenever a small astronomical object passes in front of a larger one. |
|
Almost all practicing astronomers and astrophysicists believe in the big bang, a billions-of-years-old universe and other evolutionary ideas. |
|
Now, astronomers have found further evidence that Centaurus A is a maelstrom of violence. |
|
What typical magnifications did 19 th-century observational astronomers use for lunar and planetary viewing? |
|
Spectrographs are devices used by astronomers to break up the light collected by a telescope into its various colors, or wavelengths. |
|
Naturalists who collect and classify living species or astronomers who map the stars in the sky are examples of Baconian scientists. |
|
Physicists and astronomers set about trying to identify this imprint in maps of our own galactic neighbourhood. |
|
So some astronomers are quite keen to set up their instruments in Antarctica to take advantage of the thin, cold air. |
|
Indian mathematicians and astronomers constructed sine table with great precision. |
|
The secant and cosecant were not used by the early astronomers or surveyors. |
|
A meridian line is a line used by astronomers, meteorologists and others to measure from. |
|
While meriting attention by astronomers, there is no cause for public attention or public concern as an actual collision is very unlikely. |
|
In some cases, astronomers can look along the axis of the dust torus from above or from below and have a clear view of the black hole. |
|
Gamma Ray Bursts are the most violent explosions the universe has seen since the big bang, astronomers say. |
|
|
But astronomers think that as many as two-thirds of all new stars are born as binaries or multiples. |
|
Geometry, and its branch trigonometry, was the mathematics Indian astronomers used most frequently. |
|
Observational astronomers use telescopes, on Earth and in space, to study objects ranging from planets and moons to distant galaxies. |
|
This strange planetary system came as quite a surprise to secular astronomers. |
|
Its orbit takes it almost a third of the way to the Moon, so that astronomers can enjoy long, uninterrupted views of celestial objects. |
|
Since many celestial events occur independent of local time, Universal Time is used by astronomers of all nations. |
|
After Uranus was discovered in 1781, astronomers inferred the presence of another planet from the shape of the Uranian orbit. |
|
Until that day, solar astronomers will continue to watch the sun with trepidation, never knowing what might erupt next. |
|
By then solar science was thriving and astronomers began keeping daily logs of the number of spots on the Sun. |
|
For the professional astronomers, the main subject of inquiry was the solar corona. |
|
For generations astronomers have traveled to exotic locations to observe total solar eclipses because total solar eclipses are such rare events. |
|
When astronomers talk about the evolution of a star, they clearly do not have a variational theory like Darwin's in mind. |
|
For this reason, astronomers refer to the environment on-board the space station as microgravity. |
|
Its astronomers looked into the heavens, named the stars, and paved the way for space travel and exploration. |
|
Before the end of that century, astronomers knew the answer to that question, thanks to spectrography. |
|
If accurate, this new view of galactic demography might force astronomers to rethink the fundamentals of galaxy formation. |
|
He explained that the software agents act as virtual astronomers, collecting, analysing and interpreting data continually. |
|
As a result, astronomers spotted infrared light from the explosion while the gamma-ray burst was ongoing. |
|
The group of astronomers studied a sample of 74 red supergiant stars in the Milky Way. |
|
Later, astronomers further scrutinized this star with the Hubble Space Telescope. |
|
|
The young stargazer's actions have been greeted with glee by Southampton astronomers who have long been campaigning for a clear night sky. |
|
But when the sun goes down, those cloudless, starlit nights are the envy of astronomers around the world. |
|
Then it instantaneously e-mails the news to astronomers, observatories and automated telescopes around the world. |
|
Nineteenth-century astronomers argued over what they saw through their telescopes when the Moon occulted a star. |
|
With Mars looming large in the morning sky, astronomers are capitalizing on a great chance to study our neighbouring planet. |
|
The further a planet lies from its star, the longer it takes to complete an orbit and the longer astronomers have to observe to detect it. |
|
Nasa astronomers said they had found the smallest planets yet orbiting stars beyond our Sun. |
|
After astronomers find a planet orbiting a given star, they continue to monitor that star in the hope of detecting additional planets. |
|
During just the last few years of the twentieth century, astronomers began to find planets orbiting other stars. |
|
Clearly the Maya were astute astronomers capable of predicting celestial events and keeping records of solar eclipses and other events. |
|
For six hours, Venus casts its shadow across the solar surface in a celestial display that has astronomers in a tizzy. |
|
Using this, astronomers only needed to know the period of a cepheid variable to figure out how bright, and therefore how far away it was. |
|
Whereas some folks consider brown dwarfs the duds of the galaxy, astronomers see beauty in these substellar embers. |
|
An international team of astronomers have provided compelling evidence that we have a supermassive black hole at the centre of our galaxy. |
|
For decades astronomers labored to get good photographs of the chromosphere, and in particular its spectrum. |
|
The passing of this milestone demonstrates the excellent acceptance of the VLT and its instrumentation by the astronomers. |
|
A team of European astronomers, including several from the UK, have uncovered a super star cluster in our own Galaxy, the Milky Way. |
|
No exoplanets have been imaged directly, so astronomers are working out their sizes and dynamics by their effect on their parent stars. |
|
When smaller, more powerful computers became available, astronomers were finally able to examine data more comprehensively. |
|
It was primarily a qualitative system holding the field against both mathematical astronomers and Paracelsian chemists. |
|
|
To distinguish this planet glow from that of the fiery hot stars, the astronomers used a simple trick. |
|
One way that astronomers classify planetary nebulae is by the number of axes that they contain. |
|
The new chemicals leave gamma-ray fingerprints in the fireball for astronomers to find. |
|
The site's astronomers annotate the photos, so stars, constellations and planets are all clearly identified. |
|
By examining different wavelenghts of light filtered through cosmic dust, astronomers can infer all kinds of things about far-away star systems. |
|
In the last half of the twentieth century, astronomers made enormous progress in understanding cosmology. |
|
Likewise, heliocentricity, while accepted by all but a tiny minority of astronomers and cosmologists, still has its detractors. |
|
These explosions are believed by astronomers and cosmologists to mark the birth of black holes. |
|
When 19th century astronomers looked at Mars, many saw lines criss-crossing the planet. |
|
Orbital analysis can give astronomers valuable clues about the amount and distribution of dark matter in the galaxies. |
|
Both the gaseousness of the companion galaxy and how recently the event took place are unusual, said the astronomers. |
|
For the first time, astronomers tracked the life cycle of X-ray jets from a deep space black hole. |
|
The laboratory demonstration is related to puzzling glitches observed by astronomers in the otherwise smooth, rapid rotation of pulsars. |
|
The world was breathing in the Ptolemaic concepts of astronomy for centuries until these were proven wrong by later astronomers and scientists. |
|
The Ptolemaic system had been denied by many high officials and Jesuit astronomers even before Galileo was born. |
|
Ancient astronomers who thought that the world was flat were nonetheless able to predict eclipses. |
|
Put all this together, and you have what astronomers call the equation of time, which produces a similar effect around the winter solstice. |
|
Nevertheless, this unique observing technique opens a new phase in the exploration of exoplanets, or extrasolar planets, say astronomers. |
|
This will enable astronomers to probe the gaseous component of the early Universe to study the first stars, galaxies, and quasars. |
|
Radio astronomers found pulsars, quasars, and massive molecular clouds dotting the celestial landscape. |
|
|
The astronomers speculate that quasars were ignited as blackholes grew by swallowing large quantities of cold, dense gas. |
|
In the early 18th century, the English mathematician Roger Cotes computed weighted averages of measurements made by different astronomers. |
|
The astronomers realised that a normal red supergiant alone could not have given rise to such a weird supernova. |
|
Another Jovian moon, Io, surprised astronomers by indications of volcanic activity. |
|
A team of astronomers might have solved one of the mysteries of astrophysics with the discovery of a clutch of quasars, hiding behind clouds of dust. |
|
Ancient astronomers found the notion of celestial spheres useful to the conduct of their discipline, but now we know that there are no celestial spheres. |
|
The size and age of the expanding Universe is calculated by astronomers on the basis of winking stars called cepheids, the nearest of which is 1000-2000 light years away. |
|
The astronomers found that of the 93 quasars in the sample, 19 exhibited a measurable amount of polarization. |
|
By timing it, the astronomers were able to work out how quickly it was orbiting, its distance from the Sun and how much further away Earth must be. |
|
Against this claim, it may be urged that one can perfectly well imagine a possible world in which astronomers discover that Hesperus and Phosphorus are two distinct planets. |
|
In order to find out what this mysterious energy really is, astronomers need to compare astrophysical observations that are at first sight completely unrelated. |
|
Both cities were renowned for their schools and libraries, musicians and poets, physicians and astronomers, mullahs and heretics, and also for their taverns and dancing girls. |
|
This complementary data is also helping astronomers identify the celestial object that is releasing the gamma rays and allow it to be more fully analysed. |
|
In the same way as solar eclipses allow the Sun's corona to be studied, so lunar occultations enable astronomers to investigate the distant light sources being occulted. |
|
Leo and his friends also took the spinthariscope to an out-of-town astronomers convention and advertised that they had developed an optical system that could penetrate clouds. |
|
By looking at the light from distant stars, astronomers and spectroscopists are able to detect the line spectra associated with small molecules and compounds. |
|
The same group of astronomers has also inferred a type of exoplanet that fits in between the rocky planets and the gas giants. |
|
I had contact with a yachting firm in Auckland who had a co-partner in Los Angeles and they asked could we host and billet astronomers and we said yes. |
|
Although astronomers are surprised to find a blue disk of stars swirling around a supermassive black hole, they also say the puzzling architecture may not be that unusual. |
|
Arabic astronomers used a base 60 version of Arabic letter system. |
|
|
The astronomers studied the remains of a supernova an exploded star that blew up 1,000 years ago, leaving behind debris twice the diameter of the Moon. |
|
Using polarimeters, which enable the polarization of the light received to be determined, astronomers hoped to be able to identify whether there was dust within the corona. |
|
By setting up a pendulum clock and synchronizing it with the local time according to the Sun, the astronomers were able to say when the eclipse started as they saw it. |
|
But the presence of a planet in this triple system has foxed astronomers, causing some to suggest that we need to rethink theories of planetary formation. |
|
That question has puzzled astronomers for decades, but a new study published just last week may have the answer. |
|
Australian radio astronomers assisted Apollo moon missions and were first to identify the existence of radio galaxies, and numerous pulsars and quasars. |
|
When astronomers study all those exoplanets and the systems they inhabit, it is natural to look to our own solar system as a template for other planetary systems. |
|
In order to cover all the sky with a single beam, astronomers must piece it together from millions of separate observations, each of a single point. |
|
The Mayan astronomers calculated its synodic period as 584 days. |
|
Accompanied by several other astronomers he established a temporary observatory on Pikes Peak, the summit of which is over 14,000 feet above sea level. |
|
These are the eternal questions and ones that astronomers continue to ask. |
|
Such observatories allow astronomers to observe the universe in ways not possible from the surface of Earth, usually because of interference from our planet's atmosphere. |
|
An international team of astronomers has identified the surviving companion star to the 1572 supernova explosion witnessed by the Danish astronomer Tycho Brahe. |
|
It has few distinguishable stars and is mainly notable for a nebulous, cloud-like cluster which ancient astronomers regarded as an area where energies were dissipated. |
|
However, astronomers have spotted a few luminous black hole pairs, mostly in chaotic galaxies in the early stages of a merger. |
|
Some astronomers worry that supernovas were intrinsically different in the past or that cosmic dust could make the supernovas appear dimmer than they really are. |
|
Instead, astronomers hope to observe planet formation in all its stages, each marking a phase in star and planet birth. |
|
The article reported that astronomers have allegedly found vast waves of water vapor and traces of carbon molecules that can play a basic role in organic chemistry. |
|
However, astronomers have only identified a half-dozen or so IMBH candidates, and some of those claims are controversial. |
|
These before-and-after images can help astronomers understand how stellar winds, gas and their environment interact to build a new massive star. |
|
|
Each crown appointed three astronomers and cartographers, three pilots and three mathematicians. |
|
This light is the source of light pollution that burdens astronomers and others. |
|
British astronomers have long used the Royal Observatory as a basis for measurement. |
|
For almost five millennia, the geocentric model of the Earth as the center of the universe had been accepted by all but a few astronomers. |
|
Much of what we know about the work of astronomers like Hipparchus comes from references in the Syntaxis. |
|
Researchers include biologists, geologists, oceanographers, physicists, astronomers, glaciologists, and meteorologists. |
|
The calendar may have been influenced solely by the work of Song dynasty astronomer Shen Kuo or possibly by the work of Arab astronomers. |
|
For the most part, these were too difficult to be used by anyone except professional astronomers. |
|
Inca astronomers understood equinoxes, solstices and zenith passages, along with the Venus cycle. |
|
The remote area will offer astronomers a ringside seat for the sky spectacular. |
|
Just last week, astronomers announced the discovery of a Trojan asteroid leading the planet Earth around the sun. |
|
Neutron stars are too far away for astronomers to study their composition, and scientists cannot re-create their enormous pressures in the lab. |
|
This made no sense to the astronomers of the day as Jansky did not find radio emissions from the Sun. |
|
The complex molecules were discovered by astronomers from Cornell, the Max Planck Institute for Radio Astronomy and the University of Cologne. |
|
Studied by the earliest radio astronomers in the 1940's, the Sun is not a powerful emitter of radio waves. |
|
Based on our solar system, astronomers identify planets to be Jovian or terrestrial Jovian planets are giant gas planets. |
|
The Milky Way sits near the edge of one such supercluster, the first to have its size mapped by astronomers. |
|
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. |
|
However, that's exactly how long a team of astronomers took in creating 2MASS Redshift Survey, a map of the universe. |
|
For some, it's the first steps toward a doctorate and careers as astronomers or astrophysicists. |
|
|
This missing light is called 'photon underproduction crisis' which Kollmeier states is affecting only astronomers and not the universe. |
|
What George Berkeley calls visible magnitude was by astronomers called apparent magnitude. |
|
Binary stars are ubiquitous in the galaxy, but astronomers don't fully understand how they form. |
|
That's the standard scenario for galaxy formation, and now astronomers have caught on-camera evidence of the process. |
|
The galaxy's gravity bends the light into different paths, so astronomers see the background blazar as dual images. |
|
Radio astronomers and geodetic scientists routinely monitor the ionosphere in order to detect these errors and compensate for them. |
|
Using four different ways to measure distances in the cosmos, the astronomers find a Hubble constant of 70 kilometers per second per megaparsec. |
|
Physicists and astronomers, though, deal with WIMPs and MACHOs, giants and dwarfs, and bubble chambers. |
|
However, astronomers have proposed ways that giant planets could develop bulkier moons. |
|
The astronomers recently focused on three massive, relatively nearby clusters of galaxies known to act as gravitational lenses. |
|
Using the 6-meter Atacama telescope, astronomers analyzed the temperature of the afterglow in a narrow strip of sky along the celestial equator. |
|
I picked these based on the experience of other astronomers and knowledge of the variability with stellar spectral type. |
|
When astronomers caught sight of a mysterious titanium white object circling around the Earth in 2006, they assumed it was a spent rocket. |
|
The starquakes, reported by the space agency last night, are allowing astronomers to learn about the stars' age, size and evolution. |
|
In fact, Soviet astronomers once thought that the thick, dense Cytherean atmosphere might not let any sunlight reach the surface. |
|
Like most astronomers, Ghez, who is based at the University of California, Los Angeles, had assumed these closely orbiting stars were relatively old and lightweight. |
|
Nearly all the afterglows that astronomers have detected come from gamma-ray bursts that arose in galaxies that lie 2 billion to 8 billion light-years away. |
|
To remove this effect, astronomers calculate when the pulses would have arrived at the Solar System's centre of mass, or barycentre, around which all the planets orbit. |
|
By using a coronagraph, which is a telescope attachment that blocks out the bright light given off by a star, astronomers spotted something orbiting Alcor. |
|
Known to astronomers as a reflection nebula, this type of object usually appears blue because the scattering is more efficient for these shorter wavelengths of light. |
|
|
To be able to detect these very distant objects which were forming near the beginning of the universe, astronomers look for sources which have very high redshifts. |
|
At a certain distance, as measured by the red shift of the light, astronomers can determine the density of hydrogen, based on the absorption of quasar light. |
|
The fluid beauty of Lights of Laniakea hearkens to its inspiration, a recently mapped supercluster in space containing our galaxy, dubbed Laniakea by astronomers. |
|
The new discovery suggests that astronomers might be able to use wide-angle X-ray telescopes to catch the very beginnings of hundreds of supernova explosions each year. |
|
Professor Stephen Hawking put the cat among the pigeons last week with his cheery remarks about comet Machholz-2, which some astronomers believe could be heading our way. |
|
Still, astronomers do monitor the sky for near-Earth objects. |
|
The history of longitude is a record of the effort, by astronomers, cartographers and navigators over several centuries, to discover a means of determining longitude. |
|
By measuring the period of a Cepheid and its apparent brightness, astronomers can deduce the distance to the star and to the galaxy in which it resides. |
|
In a separate set of findings, astronomers looking at the outskirts of the Milky Way found two new star streams, remnants torn from dwarf galaxies or star clusters. |
|
Thus, many astronomers seek extraterrestrial life in what's called the circumstellar habitable zone, the narrow band around the sun in which liquid water can exist. |
|
Measurements of the radial velocity and proper motion of stars allows astronomers to plot the movement of these systems through the Milky Way galaxy. |
|
Prior to the discovery of V1 many astronomers, including Harlow Shapley, thought spiral nebulae, such as Andromeda, were part of our Milky Way Galaxy. |
|
In measuring the size of the Sun, however, he reached a figure larger and more accurate than those proposed by other Greek astronomers and Aristarchus of Samos. |
|
That's the Doppler effect, and it also occurs for electromagnetic radiation, enabling police to catch speeders with radar guns and astronomers to determine distances to stars. |
|
Through their combined discoveries, the heliocentric system gained support, and at the end of the 17th century it was generally accepted by astronomers. |
|
It took thousands of years of measurements, from the Chaldean, Indian, Persian, Greek, Arabic and European astronomers, to fully record the motion of planet Earth. |
|
For instance, astronomers can measure the density of small galaxies or the cores of larger galaxies by determining how well they act as gravitational lenses. |
|
On the other hand, up-close-and-personal scrutiny of this supernova may reveal oddities that someday invalidate the faith astronomers have placed in type 1a parsec sticks. |
|
The red giant star observed by the astronomers, J0247-25, had a recent stellar collision and the team discovered the star was a new type of pulsating stars. |
|
This paper discusses such a case that exists in Hawai'i between research astronomers and the local Hawaiian community over a sacred mountain called Mauna Kea. |
|
|
The new observation also marks the first time astronomers have imaged a disk around a mature, main-sequence star using the radio energy given off by dust particles. |
|