Planet FAQ
Frequently asked questions about planets:
- Do other planets have days and nights?
- Why are planets different colours?
- Have artificial structures been found on other planets?
- Why are some planets cold and some hot?
Guestions about planets in our Solar System:
- Which is the smallest planet in the Solar System?
- How many planets are there in the Solar System?
- How many planets are there in the Universe?
- How many gas giant planets are there in the Solar System?
- Which is the hottest planet in the Solar System?
- Which is the coldest planet in the Solar System?
- Which planets have water?
- Which planet has no water?
- Which planet has no atmosphere?
- Which planets in the Solar System have rings?
- Which planets in the Solar System are habitable?
For more quesions about specific planets, see the Solar System FAQ.