Planets with suns like Wolf 359 are subject to huge blasts of radiation that raise questions about their long-term ...

Six planets are still aligned in London skies tonight (Sunday, January 26) and will remain so until about mid-February. So if ...

While Charon is currently listed as a satellite or moon by the International Astronomical Union (IAU), consideration is being given to it perhaps being classified as a dwarf planet in its own right, ...

Beautiful photos of the six planets aligned in the night sky have emerged online. Mars, Jupiter, Uranus, Neptune, Venus and ...

If it’s real, some may question whether something with a mass about three times Pluto’s counts as a planet at all.

Skywatchers: A six-planet alignment peaks this week as Mars, Jupiter, Uranus, Neptune, Venus, and Saturn come together for ...

Scientists have discovered a new type of planetary collision called “kiss-and-capture,” where Pluto and proto-Charon briefly connected and spun together before separating into their current orbital ...

University of Arizona researchers have unveiled evidence of romance at the farthest reaches of the solar system: a cosmic ...

The enormous visitor to our solar system may have been about 8 times the mass of Jupiter, and come nearly as close to the sun ...

Two papers showed these intriguing signals, but the team stresses that there are currently many uncertainties to confirming ...

This once-in-a-generation shift is a pivotal power play in a saga that will unfold in the years and decades to come.

Astronomers discovered the exoplanet in 2016, a gas giant that’s slightly larger than Jupiter with a fraction of its mass, ...