On Friday (Dec. 19), the interstellar invader, comet 3I/ATLAS, made its closest approach to Earth, coming to within 168 million miles (270 million kilometers) of our planet at 1 a.m. EST (0600 GMT).

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

When NASA’s OSIRIS-REx spacecraft scooped up samples from asteroid Bennu and brought them back to Earth, scientists expected to find amino acids and clues about how they formed. In other words, the ...

The Interstellar Mapping and Acceleration Probe (IMAP) is being launched later this month to study the outer reaches of the heliosphere which defines where our solar system ends and interstellar space ...

A new NASA spacecraft has started tracking the particle streams that can make a massive solar flare dangerous while mapping ...

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The workings of our solar system are roughly the same now as they have been for millions of years. Moons circle their planets, the planets circle the sun, the sun’s magnetic fields and sunspots wax ...

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. The interstellar invader ...