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View of Earth as seen by ESA project astronaut Sławosz Uznański-Wiśniewski inside the seven-windowed cupola, the International Space Station’s “window to the world.”

Alone among known planets, Earth has vast oceans on its surface and its landmasses are marked with lakes and extensive river drainage systems. Water is the biosphere’s lifeblood, and without

A new method to analyze gravitational-wave data could transform how we study some of the universe’s most extreme events—black holes smashing into each other.

Our circumstances here on the wondrous, life-supporting Earth can give us a false understanding of what the universe is really like. But our blue-skied, temperate planet is the extreme exception

The International Space Station’s first visitors from India, Poland and Hungary headed back to Earth on Monday, wrapping up a private mission and catching a ride home with SpaceX.

An international team of astronomers report the discovery of a long-period radio transient, which is unusually circularly polarized and showcases an accelerating spin period. The finding of the new transient,

An early Sunday morning SpaceX launch marked the 60th orbital mission from the Space Coast from all companies for the year, but also the 500th successful mission for the workhorse

For sale: A 54-pound (25-kilogram) rock. Estimated auction price: $2 million to $4 million. Why so expensive? It’s the largest piece of Mars ever found on Earth.

Dark matter is one of nature’s most confounding mysteries. It keeps particle physicists up at night and cosmologists glued to their supercomputer simulations. We know it’s real because its mass

When the news started to spread on July 1, 2025, about a new object that was spotted from outside our solar system, only the third of its kind ever known,