What else is hiding in the brightness of the outer planets? That was made more pressing by the James Webb Space Telescope’s Near-Infrared Camera catching a dim, six-mile-wide moon around Uranus a ...

The newfound satellite, only about six miles wide, becomes Uranus’ 29th known moon and orbits near the planet’s inner rings.

The Earth has a “second moon,” and it appears to have originated from the original moon. This additional moon is a near-Earth asteroid called 2016 HO3, or Kamo’oalewa, which means “oscillating ...

My InsiderThe 'quasi-satellite,' named Kamo`oalewa, has baffled scientists for decades due, in part, to its peculiar orbit. The rock, which is between 120 and 300 feet wide, technically orbits the ...

The James Webb Space Telescope has discovered a new moon that is small and dim in orbit around Uranus. The discovery brings ...

How do tidal forces shape a planet's orbital evolution, especially for those in the habitable zone? A recently submitted ...

Southwest Research Institute scientists propose a new model for the formation of compact exoplanetary systems that contain multiple rocky planets in tight orbits around their star. In this model ...

The far side of the moon and distant Earth, imaged by the 2014 Chang’e-5 T1 mission service module. Credit: Chinese Academy of Sciences HELSINKI — Two Chinese spacecraft appear to have ...

NASA's Lunar Reconnaissance Orbiter photographed a mysterious, surfboard-shaped object orbiting the moon. Here's what it really was. When you purchase through links on our site, we may earn an ...