A recent study found that Jupiter was once twice the size that it is now, making it big enough to swallow up 2,000 Earths.

But what is the science behind extraterrestrial life? Is it possible that humans will ever experience "first contact" with an ...

Jupiter, roughly 562 million miles from Earth today, has nearly 100 moons. But Batygin and his collaborator Fred Adams' research focused on two of the smaller ones, Amalthea and Thebe. Both are inside ...

A U.K.-based space propulsion startup has unveiled an ambitious concept for a nuclear fusion rocket that may dramatically ...

Hunting for the building blocks of life? Located in the asteroid belt, Ceres is likely a good bet, study finds ...

Jupiter wasn’t always the planet we know today—it was once twice as big, had a magnetic field 50 times stronger, and its ...

NASA’s IMAP mission will study the heliosphere to understand solar wind and space weather, launching in fall 2025 from ...

Claims for the detection of life on other planets go back decades. Here's why you should still be skeptical despite recent ...

"Rings are mostly made of ice and small rocks," said William Saunders, a planetary scientist at NASA's Langley Research ...

A pair of researchers in astrophysics claim the data sheds new light on Jupiter’s role in shaping the early solar system and ...

This year marks the 50th anniversary of the founding of the European Space Agency (Esa). It has launched spectacularly ...