Which way is ‘down’ has a different answer depending on where you are on Earth, in the solar system, in our galaxy and beyond ...

A planet about the size of Saturn has been discovered roaming through the Milky Way. It is a rogue body that was kicked out ...

Curious Kids is a series for children of all ages. If you have a question you'd like an expert to answer, send it to ...

In the vast calm of the solar system, planetary orbits often appear orderly, stable, and insulated from the broader mechanics ...

If scientists are able to inspect it in person, and they find that Mars was indeed once alive with microbes, we would know ...

From a return to the moon to telescope launches, there's plenty of exciting events to expect from space this year ...

The most striking claim about 3I/ATLAS is its estimated age range of 8-14 billion years. This analysis, led by Michele ...

One of the biggest recent surprises in astronomy is the discovery that most stars like the Sun harbor a planet between the ...

Beehive cluster, a group of 1,000 stars, will be visible to stargazers in January. How to see it, what’s visible to naked eye ...

One of the main questions in exoplanet science concerns M dwarfs (red dwarfs) and the habitability of exoplanets that orbit ...

Pandora, the latest in a long portfolio of University of Arizona's space science missions, has cleared its last major ...

Most planetary systems contain worlds larger than Earth but smaller than Neptune, and the low-density planets around one ...