The previously unseen world is believed to orbit far out at a range of 838 times Earth's distance from the Sun.
Tantalizing new evidence of this mysterious world has been found courtesy of two deep infrared surveys.
The document pertains to a secretive remote-viewing experiment designed to gain intelligence on military targets.
Millions of years ago, our solar system stood in the path of a veritable tsunami of gas and dust.
Scientists now believe that our solar system may have once been visited by something very large indeed.
The probe is spending Christmas Eve attempting to fly closer to the Sun than any other spacecraft in history.
The spacecraft will be trying to answer some of the most critical questions about Europa and its subsurface ocean.
A new study has highlighted the potential for finding habitable extrasolar worlds around F-type stars.
The Harvard astrophysicist believes that we may find trash from alien civilizations within the vicinity of the Earth.
Reflect Orbital is developing a novel new way to generate power by reflecting sunlight onto panels when its dark.
The smallest planet in our solar system may be hiding a treasure with a value beyond imagination.
This relatively nearby world, which is a lot larger than our own, is situated approximately 49 light-years away.
One of the most unusual comets in the solar system is due to make its closest approach of the Earth today.
Has the James Webb Space Telescope found life on a distant extrasolar world or could there be an alternative explanation ?
This latest in a long line of ridiculous conspiracy theories is perhaps the most nonsensical one to date.
A gas discovered in the atmosphere of this distant extrasolar planet is 'only produced by life', say scientists.
A team of planetary scientists has found new evidence of an undiscovered planet in the outer solar system.
Today's eclipse should be something spectacular, but it has also been mired in nonsensical conspiracies.
Astronomers have identified a potentially habitable extrasolar planet situated around 137 light-years away.
Scientists have come up with a way to find planets capable of supporting dinosaur-like extraterrestrial creatures.