PDF chapter test TRY NOW
1. Who proposed the heliocentric model of the universe?
2. Which of the following is not a part of outer solar system?
3. Ceres is a __________.
4. The period of revolution of planet \(A\) around the sun is \(8\) times that of planet \(B\). How many times is the distance of planet \(A\) as great as that of planet \(B\)?
5. The big bang occurred __________ years ago.
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