Astronomers propose a new hypothetical planet, Planet Y, beyond Neptune, based on observed orbital anomalies in the Kuiper belt.

According to the paper laying out the research behind the discovery, "TOI-1846b is a super-Earth-sized planet, with a radius of approximately 1.8R⊕, placing it within the intriguing radius valley area ...

Have you ever wondered how Earth came to be? In this video, we’ll take you on a fascinating journey through the origins of our planet, exploring the science behind Earth’s formation. Over 4.5 billion ...

We’re all familiar with the layers making up our planet’s structure. A study published in 2021 used seismic waves to build a ...

An ultra-short period planet is spiraling toward destruction within 31 million years. Its extreme heat and dense composition reveal a violent past. Our circumstances here on the wondrous, ...

Hundreds of millions of years ago, an asteroid caught by Earth's gravity might have fragmented, creating a temporary ring ...

Most cosmic dust exhibits random atomic structures, and appears like soot. Thanks to NGC 6302’s extreme stellar energy, the ...

Astronomers have found a new super-Earth named TOI-1846 b. This planet is about twice the size of Earth. It orbits a red dwarf star 154 light-years away. Scientists think it might have a lot of ...

New simulations suggest that up to four of the solar system's rocky planets, including Earth and a long-lost world, once orbited in mathematical harmony around the infant sun.

Astronomy magazine's special issue asks: What can we do so that Earth is a nice place to live now, and a million generations from now?

A strange shift in Earth's rotation is making our days milliseconds shorter — and scientists are racing to understand why.