| He discovered moons orbiting Jupiter, phases of Venus, sunspots, and features on the Moon that made it seem more like a planet. |
| The project included work on the Earth, Sun and Moon, and investigating the solar system, the phases of the moon and different types of orbit. |
| The second condition is that the Sun, Earth and the Moon must also be lined up, corresponding to the phase of the New Moon. |
| The race to land a human on the Moon may be over, but the race to discover and tap its resources is just beginning. |
| If we are to send explorers to work and live on Mars, our first challenge will be to construct and operate a way station on the Moon. |
| So his latest film, an adaptation of his stage play, The Far Side of the Moon, comes as a shock. |
