|
____ has 28 known moons and, like Neptune, a faint ring system.
|
1. Mercury
|
|
____ has almost no atmosphere. Mars has a very thin one.
|
2. Venus
|
|
____ has an atmosphere of 78% nitrogen and 21% oxygen.
|
3. Earth
|
|
The presence of ____ was mathematically predicted in 1846.
|
4. Mars
|
|
Titan is the largest of the 285 known moons orbiting ____.
|
5. Jupiter
|
|
Due to a runaway greenhouse effect, ____ is the hottest planet.
|
6. Saturn
|
|
Due to iron oxide (rust) on its surface, ____ appears red.
|
7. Uranus
|
|
____ spins the fastest and has the shortest day (< 10 hours).
|
8. Neptune
|