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

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

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

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

New observations of the interstellar comet 3I/ATLAS include the first measurement of the abundance of deuterated water ...

Interstellar comet 3I/ATLAS showed changes in its gas composition after passing close to the sun, offering data on its ...

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

A strange planetary system called TOI-201 is changing in real time, with three very different worlds pulling on each other.

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

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

Investigators said a missing piece of basic runway tech left systems blind as a landing jet and an emergency vehicle ...

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