Measurements of this interstellar comet’s molecular makeup show an excess of heavy water molecules that is dramatically ...

Scientists are grappling with a cosmic mystery: why does the Universe behave differently on massive scales compared to our ...

A star's mass determines its entire life story, from how it shines to how it dies. For young stars shrouded in dust, getting ...

A newly analyzed planetary system spotted by NASA’s TESS mission is challenging long-standing assumptions about how planets ...

New research reveals that the mysterious interstellar visitor 3I/ATLAS comes from a very cold alien environment, new research ...

"These vast frozen complexes are like 'interstellar glaciers' that could deliver a massive water supply to new solar systems ...

A mysterious interstellar comet older than the Sun is exposing alien chemistry and rewriting astronomy as we know it.

An ancient comet, 3I/Atlas, which journeyed through our solar system last year, is believed to have originated in a ...

Scientists have long suspected this was a relatively peaceful process, with showers of primordial solids slowly raining out ...

Rather than slowly condensing over millions of years, the first building blocks of Earth and other planets may have formed ...

A new experimental study published in Geochimica et Cosmochimica Acta reveals that Mercury’s sulfur-rich interior behaves in ...

The LHS 1903 system defies expectations with a rocky outer planet, prompting new ideas about how planets form and evolve.