Snapchat Planets turns your friendship ranking into a tiny social solar system, where being Mercury is elite and Neptune ...

Our solar system has two ice giants, Uranus and Neptune, but there may have been a third. According to a new study published in the journal Icarus, this extra world might have triggered a violent ...

Astronomers using radio telescope observations to get an inside look at an interstellar comet have gleaned new insights into when and where the celestial object formed. The comet, named 3I/ATLAS, ...

Measurements of this interstellar comet’s molecular makeup show an excess of heavy water molecules that is dramatically different from anything known to have ever formed around our sun Astronomers ...

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The standard story of the origin of our solar system has gone like this: 4.6 billion years ago, a giant cloud of dust hung frozen in space. Then the explosion of a nearby star caused part of that dust ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. NASA shared some new infrared images of the 3I/ATLAS interstellar comet ...

Every once in a while, the outer solar system reminds us that we've only discovered a negligible portion of it, and that the vast majority is still full of surprises. The latest example of this is a ...

The first few exoplanets were discovered in the early 1990s. But it wasn’t until the early 2000s, when astronomers began carrying out large-scale, long-term surveys of other stars, that we started to ...

Astronomers are once again questioning whether our solar system is complete. Subtle gravitational effects suggest something large may be hiding far beyond the known planets. It hasn’t been directly ...