Did you know that last year we had 28 of the fastest days ever recorded? Earth's rotation can be affected by a number of things, and scientists think we might someday need an unprecedented adjustment: ...

We celebrate the start of the year with New Year’s Day (Jan. 1) and Martin Luther King Jr. Day (aka MLK Day, on Jan. 20 in ...

It's been one Neptunian year—or about 165 Earth years—since astronomers first observed the most distant planet from the sun.