February 18 marks the discovery of Pluto by astronomer Clyde W. Tombaugh. The discovery reshaped the understanding of the ...

A newly studied solar system breaks the usual planet pattern, raising fresh questions about how rocky and gas planets form.

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 ...

Our solar system may be the odd one out. Across the Milky Way, astronomers keep finding super-Earths, planets larger than our ...

Ammon News - Astronomers have observed a planetary system that challenges current planet formation theories, with a rocky ...

We classified Pluto before really understanding it—just like we reduce people to job titles or put names on relationships ...

As next-generation telescopes map this outer frontier, astronomers are bracing for discoveries that could reveal hidden planets, strange structures, and clues to the solar system’s chaotic youth.

In an ancient star system expected to be stable and dormant, scientists found a 3 billion-year-old white dwarf star still tearing apart massive quantities of rock. “The rate we’ve seen rock consumed ...

The International Astronomical Union (IAU) decided several years ago that they needed to come up with a definition for a planet (for use with the objects in our Solar System). The IAU has various ...

A newly discovered dwarf planet could hold the key to unlocking the mysteries of our solar system’s outer reaches — but what could it mean for humanity's future in space? Social Security, Medicare are ...

LONDON — The search for an unknown planet in our solar system has inspired astronomers for more than a century. Now, a recent study suggests a potential new candidate, which the paper's authors have ...