Question | Answer |
Solar system | Consists of the sun,planets their moons,meteors,asteroids,and comets. |
Milky Way Galaxy | The galaxy in which our solar system is located. |
Gravity | The force that pulls two objects together:it pulls us toward earth and it keeps the planets in motion around the sun. |
Astronomy | The study of the moon ,stars and other objects in space |
Axis | An imaginary line that passes through earth's center and the north and south poles,about which earth rotates. |
Rotation | the action of rotating around an axis or center. |
Revolution | the movement of an object around another object. |
Orbit | the curved path of a celestial object or spacecraft around a star, planet, or moon, especially a periodic elliptical revolution. |
Tides | the alternate rising and falling of the sea, usually twice in each lunar day at a particular place, due to the attraction of the moon and sun. |
Gravity | the force that attracts a body toward the center of the earth, or toward any other physical body having mass. For most purposes Newton's laws of gravity apply, with minor modifications to take the general theory of relativity into account. |
Satellite | an artificial body placed in orbit around the earth or moon or another planet in order to collect information or for communication. |
Phase | a distinct period or stage in a process of change or forming part of something's development. |
Crater | A round pit on the moon's surface. |
Maria | Dark,flat re.gions on the moon's surface |
Core | The central part of the sun, where nuclear furion occurs |
Comet | A comet is an icy small Solar System body that, when passing close to the Sun, heats up and begins to out gas, |
Asteroid | a small rocky body orbiting the sun. |
Asteroid belt | he circumstellar disc in the Solar System located roughly between the orbits of the planets Mars and Jupiter. |
Meteoroid | small rocky or metallic body travelling through outer space. |
meteor | a small body of matter from outer space that enters the earth's atmosphere |
meteorite | fragment of rock or iron from outer space, usually a meteoroid or asteroid |
Space station | A man-made laboratory orbiting the Earth. |