Neptune is the farthest planet from the sun and was the first to be predicted before it was discovered. When you purchase through links on our site, we may earn an affiliate commission.

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. With its vanishing clouds and now a large dark spot, the planet ...

U.S. astronomers hunting for "Planet Nine" have instead stumbled on what appears to be a new dwarf planet in the solar system's outer reaches.

In 1989, Voyager 2 became the first and only spacecraft to ever fly by Neptune, and images from that mission famously show a planet that's a deep azure color. But in reality, Neptune is far more ...

NASA's James Webb Space Telescope (JWST) has found water swirling in the air of a distant alien planet, a new study reports. That exotic world is TOI-421 b, a boiling-hot "sub-Neptune" orbiting a ...