Astronomy college course/Wikipedia Sidereus Nuncius/Quiz01/9

Which two? It is useless to know that two of them are correct if you don't know which two. -Nathankr42

The answer should include which two of the answers are correct that way we can learn and know which one it is. -Xlynn89x

Instead of saying these two, it should have options to the answers that are correct. Nal2020 (discuss • contribs) 03:30, 27 January 2016 (UTC)Nal2020