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 ...

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

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

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

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

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

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

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

Earth formed within such a precise “Goldilocks zone” for oxygen that a 5% change would have prevented life from emerging.