An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit before shoving four of the solar system's planets onto a different course. When ...

Researchers analyzed 28 Ryugu asteroid samples and found preserved magnetic signals that record early solar system magnetic fields and water-driven alteration on its parent body.

The Sun is an incandescent but benevolent dictator. For billions of years, it’s kept our star system well organized through the influence of its powerful gravity. All the planets revolve around it on ...

A group of astronomers has found a solar system 116 light-years from Earth that seems to challenge current theories about how ...

Venus and Saturn are due up for a visually striking event known as a planetary conjunction. Here's everything to know about ...

Who’s ready for a “planet parade”? The last planetary alignment was in August 2025, when six planets aligned and four were ...

Some parades occur when only three or four planets align in our sky, but the coming one on Feb. 28, 2026, is a bit more rare.

Moons may seem like quiet companions to the planets, but many of them are worlds every bit as fascinating as the planets themselves. Some are covered in oceans, some erupt with lava, and others hide ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Curious Kids is a series for children of all ages. If you have a question you’d like ...

Theorbits of Jupiter, Saturn, Uranus and Neptune may have been altered by the fly-by of an enormous object from deep space, billions of years ago. According to a pre-print research paper, which is yet ...

When you see art of our solar system as the planet orbit the sun, you may notice that Earth's orbit has a tilt. It is not a perfect circle. What's more, Earth is not the only planet that displays such ...

An astronomy professor explains what exoplanets are, why he keeps looking for them and how Israel intercepts missiles “in ...