Jupiter is the largest planet in the solar system, known for its massive size, strong gravity, powerful storms and many moons ...

A pair of theoretical physicists are reporting that the same observations inspiring the hunt for a ninth planet might instead be evidence within the solar system of a modified law of gravity ...

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When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. This article was originally published at The Conversation. The publication contributed the ...

The newly identified cluster of Kuiper Belt objects lies about 4 billion miles from the Sun, offering fresh clues about how ...

As you're reading this, NASA's records read some 250 spacecraft sent into space, carrying with them either humans or our hopes for some revolutionary discovery. None of them have actually left our ...