Comet 3I/ATLAS arrived from beyond the Solar System carrying a chemical story unlike anything astronomers had measured before ...

Astronomers have revealed new details about the makeup and age of a visiting comet that was born around a distant star. They ...

A Jupiter-size exoplanet orbiting a dead star baffled astronomers. But the planet named WD 1856 b could preview the fate of ...

Astronomers have used the James Webb Space Telescope (JWST) to observe an oddball gas giant exoplanet orbiting a dead star.

Last year, an interstellar traveler entered our solar system. Some speculated that it was an alien spacecraft, but it turned ...

JWST detected rising methane emissions from interstellar comet 3I/ATLAS, exposing ancient interior ice and offering new ...

VLT observations of interstellar comet 3I/ATLAS reveal unusual chemical ratios, suggesting it formed around an ancient star ...

Interstellar comet 3I/ATLAS carries isotopic ratios entirely outside the Solar System range, ESO’s Very Large Telescope has ...

During last year’s brief visit from the comet 3I/ATLAS, astronomers got an extremely rare glimpse into the cosmos beyond our ...

Interstellar comet's chemistry offers clues to how planets form around distant stars, revealing familiar building blocks ...

A University of Colorado Boulder study has found that a rare type of meteorite likely came from a giant, ancient protoplanet ...