It’s February 29, a calendar day that takes place nearly every four years. If your non-astronomy friends ask you about it, you should be able to explain why we have leap years. Quiz: was 1900 a leap year?
It’s February 29, a calendar day that takes place nearly every four years. If your non-astronomy friends ask you about it, you should be able to explain why we have leap years. Quiz: was 1900 a leap year?