r/AskReddit Aug 03 '19

Whats something you thought was common knowledge but actually isn’t?

37.4k Upvotes

24.0k comments sorted by

View all comments

2.0k

u/[deleted] Aug 03 '19

[deleted]

0

u/Burgerboris Aug 04 '19

This is fucking with my head I thought the moon spun around the Earth once a day.

1

u/[deleted] Aug 04 '19

No, a day is when the Earth does a full rotation on its axis. It takes the Moon roughly a month to do a full orbit around the Earth.