Using the Very Large Telescope (VLT), astronomers have discovered a compact binary system consisting of two white dwarfs in the center of a nearby globular cluster designated NGC 6397. The finding was ...

Scientists have identified a rocky outer planet in a system where a gas giant was expected. The discovery challenges ...

WASHINGTON, Feb 14 (Reuters) - Astronomers have observed a planetary system that challenges current planet formation theories, with a rocky planet that formed beyond the orbits of its gaseous ...

The James Webb Space Telescope has detected the first-ever spectral signature of hydrogen sulfide around a massive gas giant planet.

Mercury is the smallest planet in our solar system. Explore its size, extreme temperatures, core structure, and comparison with Pluto.

If a gas giant planet is big enough to ignite deuterium fusion, it becomes a brown dwarf instead of a planet. But this definition is incomplete and does not tell us how gas giants form or what ...

Learn about HD 137010 b, a cold Earth‑sized planet candidate that sits near the outer edge of its star’s habitable zone.

Detection of sulfur in a distant star system gives researchers new insight into planet formation ...

The biggest planet in the Solar System. And the smallest star in the known Universe. Today, they are on a collision course. EBLM J0555-57Ab is a red dwarf and the smallest star we've ever discovered.

Astronomers have uncovered a massive gas planet in a place it should never exist, orbiting one of the smallest stars in the galaxy. A newly found world has joined the growing catalogue of known ...

Astronomers studying extreme planetary systems have identified worlds so massive that they rival the smallest stars in size. These giant planets blur the line between planetary and stellar ...