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

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

The newly identified cluster of Kuiper Belt objects lies about 4 billion miles from the Sun, offering fresh clues about how ...

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

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.

For the first time since Pluto was demoted, the idea of a true ninth planet is edging from speculation toward something ...

Europa has a vast, saltwater ocean beneath its icy shell, with more than twice the amount of water in all of Earth’s oceans ...

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

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

Astrophysicists are mapping a vast, hidden structure in space that appears to guide matter and radiation along a kind of ...

In a new weekly update for pv magazine, Solcast, a DNV company, reports that the global peak of solar output in 2025 occurred on April 29, at 06:00 UTC, estimated at 539 GW.