An interstellar comet carries water unlike anything in our solar system, revealing a far colder birthplace and clues about ...

Learn more about the interstellar traveler, Comet 3I/ATLAS, and what researchers know about its place of origin.

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

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

New research confirms Earth formed almost entirely from material in the inner Solar System, with Jupiter acting as a barrier to outer Solar System debris. Isotopic analysis of meteorites shows a close ...

New observations of the interstellar comet 3I/ATLAS include the first measurement of the abundance of deuterated water relative to ordinary water in an interstellar object. Astronomers using the ...

Protoplanetary disk. Figure from a computer simulation visualizing the formation of planets (https://svs.gsfc.nasa.gov/12278 ). Photo: NASA/JPL-Caltech. August 22, 2024, Mountain View, CA - An ...