Earth rotates once in about 24 hours with respect to the Sun, but once every 23 hours, 56 minutes and 4 seconds with respect to other distant stars. Scientists call this difference crucial to ...

Time and tide, as the ancient saying goes, wait for no one. But what is a tide? The word “tide” is a bit confusing; most people think of it as the ebb and flow of the ocean at the beach, caused by the ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. After a few years of speeding up, our planet now appears to ...

PORTLAND, Ore. (KATU) — Ever notice the ocean suddenly creep up the shore, and then pull back hours later? About twice a day, the coast experiences two high tides and two low tides. But what makes ...