Astronomers have discovered a mysterious dwarf planet, 2017 OF201, far beyond Pluto. This discovery challenges existing ...

001 c, such spacecraft can reach Planet 9 roughly a decade after launch and ... scientists can make an interactive map of where each of the hundreds of probes is, Witten says.

To aid searchers in the meantime, Brown and Batygin used their revised calculations to make a “treasure map” that points to a swath of sky where Planet Nine is most likely to be found.

We have discovered thousands of exoplanets in the last few decades, while the number of planets in the Solar System has remained at eight – but our discovery of more might not yet be over.

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Almost a decade after astronomers proposed the existence of Planet 9 ...

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For about a decade, he and other researchers have been trying to prove that the so-called "Planet 9" exists. So far, the only evidence has come from some oddities in the orbits of small Pluto-like ...