A super-Earth planet that dips in and out of its star's habitable zone has been discovered just 19.7 light-years away.

While planets circle the sun in what's called and heliocentric orbit, they rarely fall together in what appears to the human ...

Four planets will be in the parade in January, while seven will align in February. Here's how to see the events.

Venus and Saturn will be in conjunction this weekend, appearing side by side in the night sky during January's post-sunset ...

NASA's Parker Solar Probe, for example, swoops just a few million miles away from the sun's surface, gathering data about the fiery environment there. But then retreats beyond the orbit of Venus ...

“Saturday evening, January 18: Venus and Saturn will appear nearest to each other. As evening twilight ends at 6:15 p.m. EST, ...

The planets in our solar system orbit the sun in more or less the same flat plane ... In the first few hours after dark all month, you'll be able to see Venus and Saturn in the southwest, Jupiter ...

Planets continue their nighttime shows, with eight visible at points during February, including Venus on Feb. 14.

Planetary alignments aren't rare, but they can be when they involve six of the eight planets in our solar system.

HELENA — The planets are aligned. Six planets, Mars, Jupiter, Uranus, Neptune, Venus and Saturn can be seen in the night sky.

The best viewing for January's planetary parade is about 90 minutes after sunset, in as dark and clear a spot as you can find ...