| Questions | Answers |
|---|---|
| Which planet is covered by clouds of sulphuric acid? | Venus |
| Which planet is named after the Roman god of war? | Mars |
| What nationality was the first man in space? | Russian |
| What name was given to the invisible material once thought to occupy all space? | Ether |
| Which is the largest planet in the solar system? | Jupiter |
| What is the smallest planet in the solar system? | Pluto |
| What, ultimately, will the sun become? | A white dwarf |