Scientists have seemingly settled long-standing arguments about whether the components of Earth originated from the inner or ...

New observations of interstellar comet 3I/ATLAS show high levels of deuterated water, suggesting it formed in a colder star ...

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

Comets are loose collections of ice, dust and frozen gases left over from the solar system's formation 4.6 billion years ago.

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

Meteorite isotope research shows Earth's composition aligns almost entirely with inner solar system materials, with Jupiter's gravity likely blocking outer solar system debris. Published in Nature ...

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

Astronomers discover that the rotation speeds of distant planets reveal how they form and evolve in the universe ...

Research findings are available online in the journal Nature Astronomy. The original story “ Interstellar Comet 3I/ATLAS ...

Astronomers, using the Atacama Large Millimeter/submillimeter Array (ALMA), have confirmed the existence of a close quasar ...

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.