|
____ was the first planet discovered using a telescope (1781).
|
1. Mercury
|
|
____ has two small moons named Phobos and Deimos.
|
2. Venus
|
|
Galileo observed the four largest moons of ____ in 1610.
|
3. Earth
|
|
____ has almost no atmosphere. Mars has a very thin one.
|
4. Mars
|
|
____ has an atmosphere of 78% nitrogen and 21% oxygen.
|
5. Jupiter
|
|
____, the windiest planet, is 30 astronomical units from the Sun.
|
6. Saturn
|
|
____ has a spectacular ring system containing some of its moons.
|
7. Uranus
|
|
The Sun rises in the West on ____, due to retrograde rotation.
|
8. Neptune
|
