It is not often that all the planets in the Solar System other than ours are lined up across the night sky for us to see.

Mercury takes only 88 Earth days to orbit the sun.

Tonight and throughout January, stargazers can see a planetary alignment in the night sky or what some are calling a ...

While this parade of planets look to our eyes to be huddled in the evening sky, they are of course spread out across a vast chasm of space across the solar system, separated from each other by ...

Starting up again Saturday, a sweeping view of our solar system will glow in the night sky. The planetary alignment, or a ...

A planet-size object that possibly once visited the solar system may have permanently changed our cosmic neighborhood by warping the orbits of the four outer planets, a new study suggests. The ...

'Planet parade' isn't a technical term in astronomy but it is one widely used to describe the alignments of planets. The ...

Stargazers, prepare for the parade of planets that will take place over the next few nights in the sky. Here's what you need ...

A new type of exoplanet has been discovered: Enaiposha, also known as GJ 1214 b. Long heralded as a mini-Neptune, new observations have indicated that it is a member of a category never seen before ...

Jan. 15, 2025 — New observational data and simulation models have confirmed a new type of planet unlike anything found in the Solar System. This provides another piece of the puzzle to ...

In October 2020, a van-sized robotic spacecraft briefly touched down on the surface of Bennu, a 525-meter-wide asteroid 320 million kilometers from Earth.