Planet 9

Flying to (Hypothetical) Planet 9: Why visit it, how could we get there, and would it surprise us like Pluto?

In a recent study submitted to Earth and Planetary Astrophysics, an international team of researchers discuss the various mission design…

3 months ago

Planet 9 is Running out of Places to Hide

A search for Planet 9 found hundreds of potential candidates, but they are probably just clouds.

4 months ago

A 6-Year Search of the Outer Solar System Turns up 461 new Objects (but no Planet 9)

After six years of observing the cosmos, the Dark Energy Survey has announced that it is also responsible for discovering…

1 year ago

If Planet 9 is a Primordial Black Hole, We Might Be Able to See Flares When it Consumes Comets

A comet-eating black hole the size of a planet? It's possible. And if there's one out there in the distant…

2 years ago

Maybe the Elusive Planet 9 Doesn’t Exist After All

Oh Planet Nine, when will you stop toying with us? Whether you call it Planet Nine, Planet X, the Perturber,…

3 years ago

More Evidence that Planet 9 is Really Out There

What's going on in the distant reaches of our Solar System? Is there a Planet 9 out there? Out in…

4 years ago

The Record for the Most Distant Object in the Solar System has been Shattered. Introducing FarFarOut at 140 Astronomical Units

Remember Far Out, the distant planet at the far reaches of the Solar System, that was discovered in December, 2018?…

4 years ago

A Disc of Icy Material, not Planet 9, Might Explain the Strange Movements in the Outer Solar System

Is there or isn't there a Planet 9? Is there a planet way out on the outskirts of our Solar…

4 years ago

New Dwarf Planet Found in the Outskirts of the Solar System, Giving Astronomers More Ammunition to Search for Evidence of Planet 9

Astronomers have found a new dwarf planet way out beyond Pluto that never gets closer than 65 AUs to the…

4 years ago

It Might Not be Planet 9 Causing Disruptions in the Kuiper Belt, Just the Collective Gravity of Everything Out There

According to a new study by a team from CU Boulder, Planet 9 may not be necessary to explain the…

4 years ago