Our solar system today has eight planets. Till a few years back, Pluto was our ninth planet, until it was demoted to a dwarf planet. But some studies suggest that the ancient solar system once still ...

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 ...

Planet X has not yet been discovered, and there is debate in scientific community about whether it exists Astronomers have discovered fresh evidence suggesting the possible existence of an unseen ...

Astronomers have found new evidence that a mysterious ninth planet may be hiding at the edge of the solar system - rewriting what we know about the cosmos again. An international team from Taiwan, ...

Astronomers may have found a candidate for Planet Nine. This planet is beyond Neptune. The finding could be the first evidence of the theorized Planet Nine. The potential candidate was detected from ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. 2023 KQ14, nicknamed “Ammonite,” is a trans-Neptunian object ...

Recent research indicates Mercury is shrinking, with its radius decreasing by 2.7 to 5.6 kilometers due to core cooling. This contraction forms thrust faults and scarps on the surface. A new ...