Planet Nine

New evidence in support of the existence of Planet Nine

New evidence in support of the existence of Planet Nine

Last year, the existence of an unknown planet in our Solar system was announced. However, this hypothesis was subsequently called into question as biases in...
A tenth planet in our solar system

A tenth planet in our solar system?

The plane of the solar system is warped in the outer reaches of the Kuiper Belt, signaling the presence of an unknown Mars-to-Earth-mass planetary...
Newly discovered TRAPPIST-1 is older than our Solar System

Newly discovered TRAPPIST-1 is older than our Solar System

If we want to know more about whether life could survive on a planet outside our solar system, it’s important to know the age...
Four candidates for Planet 9 located

Four candidates for Planet 9 located

A concentrated three-day search for a mysterious, unseen planet in the far reaches of our own solar system has yielded four possible candidates. The search...
NASA-funded citizen science project discovers new brown dwarf

NASA-funded citizen science project discovers new brown dwarf

One night three months ago, Rosa Castro finished her dinner, opened her laptop, and uncovered a novel object that was neither planet nor star. Therapist...
Evidence mounts for the existence of planet nine

Evidence mounts for the existence of planet nine

In January of 2016, astronomers Mike Brown and Konstantin Batygin published the first evidence that there might be another planet in our Solar System. Known...
Astronomers discover alien world hotter than most stars

Astronomers discover alien world hotter than most stars

Imagine a planet like Jupiter zipping around its host star every day and a half, superheated to temperatures hotter than most stars and sporting...
Astronomers looking for citizen scientists to help find Planet 9

Astronomers looking for citizen scientists to help find Planet 9

Elusive planets and dim failed stars may be lurking around the edges of our solar system, and astronomers from NASA and UC Berkeley want...
Backyard Worlds: Planet 9 lets public search for new nearby worlds

Backyard Worlds: Planet 9 lets public search for new nearby worlds

NASA is inviting the public to help search for possible undiscovered worlds in the outer reaches of our solar system and in neighboring interstellar...
extraterrestrial observers

What if extraterrestrial observers called, but nobody heard?

As scientists step up their search for other life in the universe, two astrophysicists are proposing a way to make sure we don't miss...