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

Astronomers may have uncovered a massive hidden planet far beyond Neptune, using decades-old infrared data. The object’s ...

Mercury has long baffled astronomers because it defies much of what we know about planet formation. A new space mission ...

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

A new computational model suggests that Uranus' and Neptune's cores may be less icy than their "ice giant" nickname suggests.

By tracking tiny stellar wobbles, astronomers have detected planets forming around young stars for the first time.

A surprising new theory claims Earth’s building blocks were supernova ice, not stardust. This could change everything.

From new exoplanetary neighbors and a weakening dark energy to the best evidence for life on Mars and an interstellar comet ...

Two cosmic collisions near the star Fomalhaut solve the mystery of a disappearing "planet" and show rare planetesimal crashes ...

When you look up at the night sky, planets seem calm and fixed. But a new study shows that nearby planetary systems can be ...

Xi’an, one of China’s most advanced cities, continues to evolve into a model of modern green living. With organized streets, ...

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