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

Why don't planets fall into the stars they orbit if they're constantly being pulled by gravity?Lindsey CoughterRocky Mount, ...

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 ...

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

Astronomers discovered Gomez’s Hamburger, a massive protoplanetary disk. Edge-on view shows dust and gas layers with clumps ...

Spectacular clouds swirl across the surface of Jupiter. These clouds contain water, just like Earth's, but are much denser on ...

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 ...

Researchers uncover how Mars affects Earth’s orbit, offering new insight into the planetary forces behind ice ages.

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 ...

The Earth will not lose gravity on Aug. 12, 2026.” That plain-language sentence from a NASA spokesperson is the fastest way ...