Explore the fascinating worlds of Planetary Science and Geophysics, uncovering mysteries of the cosmos and Earth's processes.

For millions of years, a fragment of ice and dust drifted between the stars—like a sealed bottle cast into the cosmic ocean.

In a new study published on arXiv, a team determined that the interstellar comet could be older than the solar system's Sun.

We all need some space sometimes—but it's harder to find than you might think. How far into our universe do we have to go to ...

Lying between Mars and Jupiter is a massive ring of rock debris—the asteroid belt. Now thin, it’s fading away gradually.

Exoplanet hunters Christopher Watson and Annelies Mortier explain the long search for a 'twin Earth' capable of sustaining ...

Hubble’s latest image captures the dazzling spiral galaxy NGC 6000, lying 102 million light-years away in Scorpius. Its ...

New research suggests that planets outside our solar system contain far less surface water than scientists once believed.

In the 30 years since the discovery of 51 Pegasi b, more than 6,000 planets outside our Solar System have been catalogued. Two modern-day explorers explain how.

A recent study introduces the idea of Planet Y, a theoretical world that could explain strange gravitational behavior beyond ...