A coronal mass ejection on another star has been witnessed in its entirety for the first time, revealing that when these ...

Named after the Asteroid Terrestrial-impact Last Alert System (ATLAS) survey that first detected it, 3I/ATLAS includes the “I ...

Scientists found two Earth-sized planets and a third candidate orbiting a nearby double star system, TOI-2267.

While most scientists believe it’s a natural comet, one Harvard astronomer has suggested its unusual features could hint at ...

A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...

I/ATLAS is set to reach its closest point to the Sun on Wednesday (October 29), at around 11:47 Universal Time (UT). The ...

Somewhere at the edge of the solar system a new Earth-sized world might be lurking, dubbed Planet Y. Astronomers have long proposed that there might be hidden planets beyond the Kuiper belt, a region ...

A distant gas giant the size of 10 Jupiters is now the first planet outside Earth's solar system to be mapped in three ...

New observations suggest that the dwarf planet Makemake is surrounded by faintly glowing methane gas. Scientists are unsure if the gas is contained within a wispy atmosphere or being ejected into ...

There are a couple of ways that scientists can date planets, so which planets formed first in our solar system?

On August 24, 2006, our solar system lost a planet. It wasn't by cataclysmic destruction, but rather by the vote of the International Astronomical Union, which declared that Pluto, considered the ...

The official number of exoplanets—planets outside our solar system—tracked by NASA has reached 6,000. Confirmed planets are added to the count on a rolling basis by scientists from around the world, ...