| A | B |
|---|
| Science of studying objects in space | Astronomy |
| An inner planet with 2 moons; often covered with dust & rich in iron | Mars |
| Has very hot days, extremely cold nights because of no atmoshere | Mercury |
| Helps planets move in a circular path instead of a staight line | Gravity |
| Has a moon named Titan | Saturn |
| Has an atmosphere of thick clouds which reflects the sun's light making it the brightest in our sky | Venus |
| A "gas giant" planet that rotates on its side | Uranus |
| A planet that has liquid water & atmosphere to sustain life | Earth |
| Has a storm that has been raging for hundreds of years causing a Giant Red Spot | Jupiter |
| Made of water, ice, dust, and chunks of rock | Saturn's rings |
| Jupiter | has the greatest number of moons & the largest planet in our solar system |
| 60 Earths could fit inside this "gas giant" | Neptune |
| Features common to the 4 "gas giants" | They all have rings, more than 1 moon, very low temperatures, & are outside the asteroid belt |
| All of space & everything in it | Universe |
| large hole that is made when a meteorite hit a moon or planet | crater |
| Includes the Sun, planets, their moons, & other objects that orbit the Sun | Solar System |
| Asystem of millions to trillions of stars, gases, & dust held together by gravity | Galaxy |
| A vehicle that carries camers & other tools to study objects in space | Space probe |
| An object that orbits another object in space | satellite |
| Order of inner planets closest to farthest from the sun | Mercury, Venus, Earth, Mars |
