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 ...

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 ...

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

The space rock, known as "2026 AJ" and 40 feet in diameter, is hurtling toward our planet at around 20,500 miles per hour.

This video explains how motion, inertia, and Earth’s rotation affect a jump inside an aircraft, and why you land in the same ...

After an unidentified astronaut suffered a medical issue, NASA made the call to return Crew-11 early from the ISS. Here's ...

Scientists have measured that Jupiter releases more internal heat than it absorbs from the Sun, based on observations of its structure, rotation, and atmospheric behavior.

2025 MN45 isn't the overall spin-rate record holder. Astronomers have found a number of small asteroids — those just a few ...

Scientists have discovered the fastest-spinning asteroid sized over 0.3 miles in diameter, which is rotating about once every ...

In its preliminary data release, taken from just seven nights of observations, the powerful Vera C. Rubin Observatory has ...

We’ve probably all had a few conversations with people who hold eccentric scientific ideas, and most of the time they yield nothing more than frustration and perhaps a headache. In [Bertrand Selva]’s ...

On certain trans-Pacific flights, you can "time travel" by crossing the International Date Line. For example, if you want to go from San Francisco to Tokyo, and your flight departs at 5:00 p.m. on ...