An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...

The article humorously imagines how planets would describe themselves if they were dating profiles. Each planet has a unique ...

The acid yellow moon Io that orbits Jupiter may be less than 30% the size of Earth, but is considered the most volcanic body ...

WASP-121b is like nothing in the solar system, raining liquid metal and being puffy like a marshmallow. The origins of these ...

Missed January's planetary parade? February 2025 offers another celestial spectacle. Discover when, where & how to catch ...

The eruption released energy six times greater than all Earth's power plants combined, exceeding 80,000 trillion watts.

NASA’s Juno spacecraft has uncovered an immense volcanic hot spot on Jupiter’s moon Io, surpassing any previously recorded ...

"This is the most powerful volcanic event ever recorded on the most volcanic world in our solar system — so that's really saying something." ...

NASA’s Juno mission found Io’s biggest volcanic eruption ever. The explosion was stronger than all Earth’s power plants ...

Scientists studying samples that NASA collected from the asteroid Bennu found a wide assortment of organic molecules that ...

Though the planets are always “aligned,” seeing more than four in the sky is more uncommon. February’s lineup is a chance to ...

Titan is the only moon in our solar system with a significant atmosphere. Now we have a very good idea of how this dense ...