The leading explanation for all of these mysteries is known as the giant impact hypothesis. According to this story, when the ...

In the past couple of months there have been several celestial events that have dazzled the night sky. For those who may have ...

This Friday, all seven planets will be in the night sky for a brief period. Join the cosmic spectacle and learn where to look for each planet!

Could a giant planet between Mars and Jupiter have doomed Earth? A new study suggests that small changes would have been ...

The alignment will involve Mercury, Venus, Mars, Jupiter, Saturn, Uranus, and Neptune appearing in an arcing line from Earth's perspective. This occurs due to the planets' orbits bringing them ...

March’s night sky brings a total lunar eclipse, a rare chance to see Mercury, and shifting planets. Don’t miss these ...

Last year, astronomers announced that a planet orbits Barnard’s star. Now, researchers have confirmed the existence of three more.

Seven planets are on display in the night sky at the end of February, but some will be harder to spot than others. Here’s what you need to know to catch a glimpse.

Artist's concept of a potentially habitable super-Earth orbiting a star called HD 20794. Illustration credit: Gabriel Pérez ...

The best opportunity to potentially see all seven planets is coming up on Feb. 28 around 6:10 p.m. ET, according to Shanahan. Mercury, which is the closest planet to the sun, would be the first to be ...