Smaller gas giants are less likely to survive in such systems, surrounded by clashing planetary titans. With their lower ...

New observational data from the James Webb Space Telescope and simulation models have confirmed a new type of planet unlike ...

The Red Planet reaches its best position all year this week on January 15. Here’s how and when to get out and see it.

An occultation of Mars by the Moon last occurred on Dec. 7, 2022. This photo, showing Mars just before it went behind the Moon, was taken during that occultation at PAC’s Paul Castle Observatory in ...

By Elaine Glusac Pluto May Have Captured Its Biggest Moon After an Ancient Dance and Kiss Charon is large in size relative ... “discovered” planets around a nearby star, only to retract ...

New ground- and space-based infrared observations are giving astronomers a better handle on the true populations of red ...

The Sun sometimes coughs up solar flares, which occur when the star’s magnetic field twists and sends a burst of energy and ...

From the total lunar eclipse in March to three epic supermoons this fall, these are the best celestial events of 2025 that ...

"There are still many things related to planetary formation and the early evolution of young planetary systems that we don't ...

When it comes to celestial events, 2025 is getting off to a star-packed — or mostly planet- and comet-studded — start, including an upcoming welcome to a first-time visitor to our solar system.

The Red Planet will be at its closest point to Earth, also known as perigee, on Jan. 12 and will be exactly opposite the sun ...

On Jan. 25, Mercury will briefly join the planetary parade, creating a rare lineup of all seven planets visible from Earth. However, spotting Mercury will be challenging due to its small size and ...