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

A study led by Howard Chen looks to explain what NASA space telescopes are missing in the search for life beyond Earth.

On October 6 1995, at a scientific meeting in Florence, Italy, two Swiss astronomers made an announcement that would transform our understanding of the universe beyond our solar system. Michel Mayor ...

Exoplanet hunters Christopher Watson and Annelies Mortier explain the long search for a 'twin Earth' capable of sustaining ...

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

The Habitable Worlds Observatory is poised to tell us whether Earth-like planets are common—if it can get off the ground ...

3I/ATLAS likely weighs more than 33 billion tons. The interstellar object hurtling toward the inner solar system, where Earth is located, is much larger than previously thought, astronomers say. A ...

Israel has been blocking the flow of physical money into Gaza since the start of the war. So whatever paper cash was in Gaza before the war, that's all that's been circulating. It's falling apart from ...

Ammonite, officially designated 2023 KQ14, is a distant world that keeps its cool far beyond Neptune. The discovery appears in a peer reviewed study that also puts fresh pressure on the idea of a ...

If you looked up at the morning sky Friday, you may have noticed something "peculiar," according to NASA. A trio of "celestial objects" came together for a "magnificent conjunction." Stream the ...

Virgo season began with a new moon, and now it’s ending with one, too. On September 21, the skies will deliver a rare encore: the second consecutive Virgo new moon, this one supercharged as a solar ...