Our solar system may have a ninth planet after all, following the declassification of Pluto nearly two decades ago, ...

Discover the order of planets in the solar system. From Mercury to Neptune, explore our solar system and learn more about our cosmic home. The solar system is our cosmic neighborhood, made up of ...

Researchers say they found a curious dot on infrared images taken 23 years apart that seems to be moving in a manner ...

A 9th planet in our solar system might be found — and no, it’s not Pluto - Is there another planet out there? Researchers say ...

An alternate explanation that fits the evidence is that Vesta was once part of a planet – but which planet that might been ...

A powerful new observatory is the best hope yet for finding the elusive Planet 9, a large planet that some scientists say is ...

Mar. 17, 2025 — A combination of cosmic processes shapes the formation of one of the most common types of planets outside of our solar system, according to a new ... Webb Telescope Captures Its ...

Researchers have found a candidate for the hypothetical Planet Nine, which could be an undiscovered giant planet way out in our solar system. However, as with all ninth planet research, the new ...

Yet none of this kind exist in our solar system. Planet Nine would ... its strong gravity would also explain why all these comets and tiny dwarf planets like Pluto all cluster together and move ...

Our solar system may have a ninth planet after all, researchers say. The possibility that an additional planet may be hidden far into the solar system was touted more than a century ago.