For a long time, children learning about space in school were taught that there were nine planets in our solar system. Then, ...

Ever since Pluto was demoted from planet status, astronomers believe a real Planet Nine exists in the solar system ...

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Ever since William Herschel discovered Uranus in 1781, astronomers have been eager to find new planets on the outer edge of ...

If there is some planet nine, or "Planet X" lurking out there, we have yet to find it. But there is some tentative evidence for it. As we have found more Pluto-like bodies known as Trans-Neptunian ...

5️⃣ ‘Saddest thing’: When crews in Rome built a tiny temporary pool in front of the famous Trevi Fountain for tourists to ...

The search for Planet Nine, a hidden world beyond Neptune, is heating up as scientists prepare to use a powerful new telescope.

But even including Arda/Earth, these planets only account for seven of the nine planets. As usual, Pluto was left out of the lineup, which just leaves Venus. However, Venus has a more involved ...

Planet Nine, a massive icy world, may be lurking at the outer edge of our solar system, awaiting discovery by advanced telescopes. "It's really difficult to explain the solar system without Planet ...