Today In The Space World on MSN

There is another massive planet in our solar system

Why Can't We Find Planet 9? Deep in the outer reaches of our solar system, far beyond Neptune and Pluto, something massive is ...
Morning Overview on MSN

Planet 9 mystery deepens: epic discovery or cosmic illusion?

Planet 9 sits at the edge of scientific imagination, promising either an epic expansion of the Solar System or a lesson in ...
BGR

Is There Actually A Ninth Planet In Our Solar System? Here's What We Know

On August 24, 2006, our solar system lost a planet. It wasn't by cataclysmic destruction, but rather by the vote of the International Astronomical Union, which declared that Pluto, considered the ...
Live Science

Astronomers discover new dwarf planet 'Ammonite' — and it could upend the existence of Planet Nine

A newly discovered dwarf planet called 'Ammonite' (2023 KQ14) has been spotted in the outer solar system, and it could be another nail in the coffin for the Planet Nine hypothesis. When you purchase ...
New Scientist

Our solar system is extremely weird: Best ideas of the century

Realising that our solar system isn’t like most others out there has helped astronomers rewrite the story of how it formed ...