Planet Nine

Astronomers Have Found Planet 9… in Another Solar System

Even with all we've learned about our own Solar System, especially in the last couple of decades, researchers still face…

9 months ago

The Sun Might Have Once Had a Binary Companion Star

A new study from the Harvard Smithsonian Center for Astrophysics has bolstered the case for our Sun having a long-lost…

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…

1 year 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,…

1 year 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…

3 years ago

Did the Sun Steal Planet Nine?

One of the biggest new¬†mysteries in our Solar System is the purported presence of a large and distant "Planet Nine,"…

5 years ago

Is Planet X Linked to Mass Extinctions?

Two researchers believe that the hypothetical "Planet Nine" may be responsible for cyclic extinctions seen in the biological record.

5 years ago

Weekly Space Hangout – Feb. 26, 2016: Fast Radio Bursts & Missing Baryons

Host: Fraser Cain (@fcain) Guests: Kimberly Cartier (@AstroKimCartier ) Dave Dickinson ( / @astroguyz) Jolene Creighton ( / @futurism) Nicole…

6 years ago

Search Narrows For Planet Nine

US astronomers announced last month they may have found a ninth planet beyond Neptune, but conceded they had no idea…

6 years ago

And Mercury Makes Five: See All Naked Eye Planets in the Sky at Once

A fine meeting of all five naked eye planets greets dawn skywatchers in early February as Mercury, Venus, Mars, Saturn…

6 years ago