Is there a massive undiscovered planet on the outer reaches of the solar system? The idea has been around since before the ...

Voyager 1, launched in 1977 and traveling for nearly 50 years, has not yet traveled the distance light covers in one day.

Earth is the only place in the universe scientists known to have organics form of life inside. Now, another planet might be ...

In 2015, astronomer Tabetha Boyajian and colleagues announced the discovery of unusual light fluctuations coming from a star ...

As scientists wait for the asteroid to reappear, its revised trajectory is now drawing attention to another possible target: ...

Betelgeuse, one of the brightest stars in the night sky, may not be alone. And its potential companion may be responsible for ...

Scientists have confirmed a potentially habitable fifth planet in the nearby L 98-59 system, revealing a diverse collection ...

Comet 3I/ATLAS was first identified by the Asteroid Terrestrial-impact Last Alert System (ATLAS), a global network of four ...

More recently, astronomers have proposed a theory for its volatile nature, which explains the star's seemingly erratic ...