People always want to know what will happen to Earth when the sun eventually swells up as a red giant. For one thing, the ...

Have you ever wondered what would happen if the Sun had a different color? This fascinating video explores the potential effects on Earth if the Sun changed from its familiar yellowish-white hue to ...

A crescent moon will appear alongside the bright stars Castor and Pollox to form a lopsided grin in the night sky on May 29.

The green flash is a rare, brief optical event of green, yellow, and sometimes blue that colors the horizon, occurring at ...