For the first time in years, astronomers are seriously talking about adding a new member to the solar system’s planetary ...

The search for an unknown planet in our solar system has inspired astronomers for more than a century. Now, a recent study suggests a potential new candidate, which the paper’s authors have dubbed ...

Somewhere at the edge of the solar system a new Earth-sized world might be lurking, dubbed Planet Y. Astronomers have long proposed that there might be hidden planets beyond the Kuiper belt, a region ...

A new study has proposed the existence of Planet Y, an alternative Planet Nine candidate that is smaller and closer to Earth than the hypothetical Planet X, which astronomers have been hunting for ...

Did you know Solar Smash has hidden planets? Watch as I unlock and destroy Frosty the Snowman, Ghost World, Donut Earth, and more in this chaotic adventure! The world's tallest teenager becomes the ...