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 ...

SANTA CRUZ — Xi Zhang, a professor of Earth and planetary science at UC Santa Cruz, has discovered that an exoplanet classed ...

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

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

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 ...

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

Astronomers discovered a new moon of Uranus and hundreds of moons around Saturn over the past year, and there may be many ...

How common are Earth-like planets in the universe? When I started working on supernova explosions, I never imagined that my ...

Astronomers using NASA's Hubble Space Telescope have imaged the largest protoplanetary disk ever observed circling a young ...

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

Our sun is about halfway through its life, which means Earth is as well. After a star exhausts its hydrogen nuclear fuel, its diameter expands more than a hundredfold, engulfing any unlucky planets in ...