front 1 Galaxies | back 1 huge collection of dust, gas, and billions of stars with their solar system |
front 2 Asteroids | back 2 mainly found between Mars and Jupiter 1.1-19 million larger than 0.5 miles |
front 3 Comets | back 3 a small, icy body that, when passing the sun, warms and spins gases that form a tail millions of miles long |
front 4 Spacecraft | back 4 satellites orbit spacecraft, fly by spacecraft, landing, and rover |
front 5 Planets | back 5 1. orbit a star 2. have enough gravity to form a spherical shape 3. has to have enough gravity to keep its orbit |
front 6 Moons | back 6 Earth has 1 Mars has 2 Jupiter has 79 Saturn has 83 Uranus has 27 Neptune has 14 |
front 7 Stars | back 7 Giant spheres of super hot gas made of mostly hydrogen and helium |
front 8 Constellations | back 8 a pattern of stars that people imagine to represent a figure, animal, or object |