Backyard Worlds: NASA is asking for volunteers to help find the hypothetical Planet 9

Some astronomers think in our outer solar system there’s a giant, undiscovered world hiding and they call it (for obvious reasons) Planet Nine. Whether it exists, it could be 5-10 times the size of the Earth and orbit Sun hundreds of times farther away than Earth orbiting Sun. Now, a NASA citizen science project called […]

Planet Nine might not exist, many astronomers now think

This article is originally published on The Conversation with the title of “Why astronomers now doubt there is an undiscovered 9th planet in our solar system”. Samantha Lawler, University of Regina Planet Nine is a theoretical, undiscovered giant planet in the mysterious far reaches of our solar system. The presence of Planet Nine has been […]

Planet Nine – Where is it?

In January 2015, Caltech (California Institute of Technology) astronomers Konstantin Batygin and Michael E. Brown published an article titled Evidence For A Distant Giant Planet In The Solar System and announced calculation-based evidence of a massive ninth planet. Despite they have had started their research to demonstrate that there’s no ninth planet, they reached the […]

Astronomers Think There is a 9th Planet Beyond Pluto – And It’s a Giant!

Astronomers now think there’s a 9th planet in the solar system almost certainly (hint: it’s not Pluto). The farthest planet from our Sun is probably a giant, smaller than Neptune but likely larger than the Earth. It is informally called Phattie, but commonly known as Planet Nine.