The presence of deuterium, an isotope of hydrogen, in 3I/ATLAS suggests the interstellar comet formed in a much colder place ...

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

This video provides an educational look at various exoplanets discovered within our galaxy. It examines the scientific ...

Scientists suggest that a fifth, hidden force linked to dark energy may exist in the solar system but has not yet been ...

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

Explore 25 universe mysteries scientists are still scratching their heads over, from dark matter to the Big Bang's secrets.

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

The study says that large cosmological surveys like Euclid and DESI can provide hints of new physics by looking at billions ...

NASA unveiled a new telescope on Tuesday to scan vast swathes of the universe for planets outside our solar system and probe ...

It was 1972 and Apollo astronauts Harrison “Jack” Schmitt and Eugene Cernan had just stepped onto the moon’s surface to begin ...

Get a first look at the completed observatory.