Look to the sky early on Tuesday, and the crescent moon will make Mars disappear. Then about an hour later, the red planet will return, as if nothing ever happened. This celestial event is known as a occultation,
For as long as human beings have looked up at the stars in the sky, two questions have captured our collective imaginations: are there other life forms out there on any of their worlds, and will we ever
Long-distance space travel, traveling at sub-light speeds, will require a way to make the journey with a crew of aging humans. While it’s possible to avoid some of that through time dilation (a quirk physics
Scientists have detected grains of stardust that are older than the Sun inside a gigantic meteorite that fell in Chihuahua, Mexico, in 1969, according to a study published on Monday in Nature Astronomy.
Scientists knew the impact happened; they just didn't know where. About 790,000 years ago, a meteor slammed into Earth with such force that the explosion blanketed about 10 percent of the planet with black
(CNN) — For only the second time, astronomers have detected gravitational waves that were created by the violent merger of two neutron stars, according to a new study. But the two neutron stars that are
Will 2020 be the year you start stargazing? You’ve picked a great time to begin. Here are the celestial highlights of the next 12 months: Earth just had one on Christmas Day, but an annular solar eclipse
The night sky is changing, and we can’t figure out why. History would have us believe that the night sky is permanent and unchanging. After all, navigators have steered their ships using fixed stellar