Planet hunters have grown used to strange worlds, but a handful of discoveries now point to something even more radical: ...

Astronomers have uncovered a unique exoplanet system, revealing a surprising and rare pattern among its planets. The discovery, detailed in a research paper published on the arXiv pre-print server, ...

According to the leading theory of how the Earth-Moon system formed (the Giant Impact Hypothesis), a Mars-sized object (named ...

Discover how scientists have used iron isotopes to determine the likely origin of the Mars-sized planet named Theia.

The outer planets of the solar system are swarmed by ice-wrapped moons. Some of these, such as Saturn's moon Enceladus, are ...

The outer planets of the Solar System are swarmed by ice-wrapped moons. Some of these, such as Saturn’s moon Enceladus, are ...

Skylights, openings in the surface of Mars that descend down into caves, have been found on Mars, along with signatures for ...

Theia, the world that helped form the Moon, came from the Solar System. Chemical clues in Earth and Moon rocks reveal this ...

The James Webb telescope may have detected the universe's earliest and most distant known black hole at the heart of galaxy ...