The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

While the composition of gas and dust in a molecular cloud is fairly uniform, everything changes once a star begins to form.

The formation of our solar system from a singular nebula raises an intriguing question: why did each planet develop with a ...

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

The presence of vaporized metals and minimal hydrogen indicates an entirely different evolutionary pathway ... our understanding of the diversity of planets (just like this strange object in our Solar ...

"The climate of this planet is extreme and nothing like that of Earth. The planet's dayside is so hot that elements typically thought of as 'metal' are vaporized into the atmosphere." ...

Long ago, a planetary object eight times the mass of Jupiter may have once visited the solar system and altered […] The post ...

Staring up at the night sky, you might see thousands of stars sprinkled above the horizon. It feels as though you can see so ...

NASA has shared details of what to look out for in the night sky this month, with the moon appearing alongside a parade of planets.

15, 2025 — New observational data and simulation models have confirmed a new type of planet unlike ... could reshape our understanding of the Earth-Moon system and the broader solar system.

There are 20 amino acids that create the proteins required for life on our planet — and scientists have now found exactly 14 ...