Even at a glance, the planets in our solar system are wildly diverse. Huge and small, airless and densely packed with ...

Rather than slowly condensing over millions of years, the first building blocks of Earth and other planets may have formed ...

Humanity has built some incredibly destructive weapons. There are still roughly 12,000 nuclear warheads on Earth today, ...

The LHS 1903 system defies expectations with a rocky outer planet, prompting new ideas about how planets form and evolve.

Using NASA's exoplanet-hunting spacecraft TESS (Transiting Exoplanet Survey Satellite) and Antarctic Search for Transiting ...

The solar system looks stable — but it’s actually a delicate balance of gravity. Every planet plays a role, even the small ...

The discovery, made using Nasa's James Webb Space Telescope (JWST), is being hailed as a significant leap in our ability to ...

Scientists have discovered unexpected water-ice clouds on a distant, Jupiter-like exoplanet, challenging current atmospheric ...

Add Yahoo as a preferred source to see more of our stories on Google. An artist’s concept shows the inner regions of a ...

The interplanetary comet 3I/ATLAS is remarkably rich in a specific type of water that contains deuterium, meaning it came ...

Astronomers have long been puzzled by a cosmic mystery: planets orbiting two stars—like Star Wars’ Tatooine—are surprisingly rare, even though they should be common. New research suggests the culprit ...

A strange planetary system called TOI-201 is changing in real time, with three very different worlds pulling on each other.