Rock icon Paul McCartney has opened up about Venus and Mars and its titular track as the album celebrates its 50th anniversary. The former Beatle took to his website on Friday, March 21 ...

The crescent moon and Venus and Mars just after sunset on Feb. 8, 2015 in Sanya, China. Credit: Volvo Ocean Race via Getty Images The moon, Venus and Mars are getting close in the night sky this week.

Volcanic features have been observed on our fellow rocky planets, Venus and Mars, but they largely appear to be inactive right now. Some scientists, however, have suggested that current volcanic ...