At half the size of Earth and one-tenth its mass, Mars is a featherweight as far as planets go. Yet new research reveals the ...

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 “natural history” approach to space exploration would take into account instead developments in the fields of physics, ...

Astronomers have captured an exceptionally rare view of young planets in mid-transformation, revealing how bloated, giant worlds may shrink into the most common planets in the galaxy. Astronomers have ...

Thanks to the discovery of thousands of exoplanets to date, we know that planets bigger than Earth but smaller than Neptune ...

The star system V1298 Tau reveals that many planets begin as large, low-density worlds that slowly shrink and shed their ...

GRAVITY Universe Time Clock uses magnetic levitation to create an illusion of time orbiting like a planet in space.

Learn 7 fascinating facts about Earth Rotation Day 2026 and understand how our planet’s spin affects time, seasons, and life ...

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 ...

Astronomers may have finally worked out how planets between the size of Earth and Neptune – which aren't found in our Solar ...