From Viking to Perseverance, scientists have spent decades chasing chemical hints that could point to life beyond Earth.

There could be a ninth planet in our solar system that's lying in wait to be discovered - and no, it's not Pluto. Our solar ...

In 2025, astronomers sharpened their view of the planetary system around Proxima Centauri — the sun's closest stellar ...

A small, icy moon of Saturn called Enceladus is one of the prime targets in the search for life elsewhere in the solar system ...

Scientists using the James Webb telescope observed a distant exoplanet with an atmosphere of soot and diamonds, challenging all explanations.

On Christmas Eve 1968, the Earth received a message from astronauts on a mission like no other - the first around the moon. NASA will return in 2026.

From stranded astronauts to secret moons to space photos that were once impossible to consider, here are the top space ...

Investment firms have put over $100 million into developing risky technologies that could cool the planet with unknown side ...

Pluribus imagines Kepler-22b as an ocean world that sends a gift to humanity through radio waves. In real life, no such ...

From an interstellar comet to breathtaking auroras and from brand-new rockets to iconic space telescopes, here are some of our favorite images from the cosmos in 2025 ...

Astronomers thought they had seen the "first hints of life on an alien world" this year, but they disappeared under closer ...

Humanity has sent into space everything from lightsabers and Tesla Roadsters to golden records and entire digital genetic ...