Unlike Earth-based observatories or those influenced by our planet's halo of hydrogen ... 8 alien signals coming from beyond ...

Much of the understanding of the seventh planet comes from a brief flyby nearly 40 years ago, which researchers now say ...

For nearly 40 years, scientists have generally agreed that Earth's Moon formed from debris after a massive collision with our ...

Why does Jupiter look like it has a surface – even though it doesn’t have one? – Sejal, age 7, Bangalore, India ...

If you didn't know, Jupiter has no solid ground – no surface, like the grass or dirt you tread here on Earth. Let's explain ...

Beyond Neptune lies the Kuiper Belt, a vast region of icy bodies that holds the secrets to the solar system’s formation.

Quanta Magazine moderates comments to facilitate an informed, substantive, civil conversation. Abusive, profane, ...

Hale-Bopp originated in the Oort Cloud, a theoretical shell of icy planetesimals surrounding the sun in the outer reaches of ...

When we think of exoplanets that may be able to support life, we home in on the habitable zone. A habitable zone is a region ...

After a decade-long search, some scientists say a growing number of clues point to the existence of a hidden planet in the Kuiper Belt beyond Neptune — and they may soon have the opportunity to find ...