B2S2 Formation of Galaxies & the Solar System

4. Pull The attraction between two objects due to the invisible force of gravity.
5. A large grouping of stars in space.
6. A state of matter with indefinite shape and volume.
11. Large and small rocks or metallic masses orbiting the Sun; made up of materials similar to that which formed the planets
13. The luminous star around which Earth and other planets revolve; composed mainly of hydrogen and helium
14. body An object visible in the sky, such as a planet, sun and the moon.
15. Way It is the galaxy in which we live. It is a spiral shaped galaxy that contains several hundred billions of stars, including the sun.

1. Theory It is the idea that the universe began as just a single point, that expanded rapidly about 13.7 billion years ago.
2. A curved path followed by a satellite as it revolves around an object.
3. A celestial body that revolves around the planet.
4. The force that causes objects with mass to attract one another.
7. large celestial bodies that revolves around a star in the solar system.
8. System A star and the group of planets and other celestial bodies that are held by its gravitational attraction and revolve around it.
9. Small chunks of rock that travel through space are known as meteoroids. If they enter a planet’s atmosphere and burn up, they are then seen as meteors. Sometimes larger pieces of rock survive long enough to crash into a planet’s surface. Space rocks on the Earth’s surface are known as meteorites.
10. Belt. The main belt lies between Mars and Jupiter, roughly two to four times the Earth-Sun distance.
12. Tiny particles of matter floating in the space; condense under gravity to form stars and planets.