After a decade-long search, some scientists say a growing number of clues point to the existence of a hidden planet in the ...

After a decade-long search, some scientists say a growing number of clues point to the existence of a hidden planet in the Kuiper Belt beyond Neptune — and they may soon have the opportunity to find ...

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Tiny grains from asteroid Ryugu are revealing clues to the magnetic forces that shaped the far reaches of the solar system over 4.6 billion years ago. The findings suggest the distal solar system ...

Astronomers are investigating the possibility of a hidden ninth planet beyond Neptune, which could explain unusual orbital patterns in the Kuiper Belt.

"Get a free What If Top 10 book when you sign up for our newsletter: Earth is the only life-supporting planet in our Solar ...

The planet Jupiter has no solid ground – no surface, like the grass or dirt you tread here on Earth. There’s nothing to walk ...

Astronomers have been trying to find a new planet beyond the orbit of Neptune for several decades, but all to no avail. Its nickname is Planet Nine; supposing this planet exists, it could help explain ...

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Complex carbon-based molecules crucial to life on Earth originated somewhere in space, but we didn't know where. Now, huge ...

Our ability to detect planets outside our Solar System is becoming more refined. Thus, astrophysicists can now detect exoplanets still nestled within the dust cloud that witnessed their birth, right ...