The Northern Lights or aurora borealis may be visible in the U.S. this week due to a "co-rotating interaction region"— a ...

Can't spring for a big vacation this year? The best travel books promise a great escape without leaving the house. Travel ...

Russian President Vladmir Putin declared an Easter ceasefire in Ukraine, but also warned that they would respond to Ukrainian ...

Now, we can gear up for another sky show. The April Lyrids meteor shower will continue through April 28, but peaks on the ...