WASHINGTON (Reuters) -Just as Earth orbits the sun, most planets discovered beyond our solar system orbit a host star.

Interstellar comet 3I/ATLAS has caught the interest of astronomers and amateur enthusiasts alike as just the third object to ...

Space scientists look back on three decades of exoplanet discoveries—from rows of massive ‘super-Earths‘ to worlds with ...

Neal Girandola and Andrew Triana run the “Mostly True Alien Stories” podcast. The podcast’s TikTok channel explains, “We just ...

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 ...

A study led by Howard Chen looks to explain what NASA space telescopes are missing in the search for life beyond Earth.

On October 6 1995, at a scientific meeting in Florence, Italy, two Swiss astronomers made an announcement that would transform our understanding of the universe beyond our solar system. Michel Mayor ...

The discovery of the "hot Jupiter" exoplanet 51 Pegasi b on Oct. 6, 1995 changed the course of astronomical history.

The comet is one of only three of its kind recorded in history. But others think there could be more to this celestial object.

The solar system is a grand cosmic stage where each planet and moon plays a unique role in a story billions of years in the making. From Mercury’s shrinking surface and Venus’s runaway greenhouse ...

"It was just a matter of time before we found them." ...

A recent study introduces a potential new candidate, dubbed Planet Y, inferred from the tilted orbits of distant objects in the Kuiper Belt.