Alan Bean stated he does not think of any extraterrestrial life form to have ever visited the Earth.
NASA just announced its newest discovery, and conspiracy theorists had wished it was aliens.
NASA scientists found ancient microscopic alien life forms inside volcanic caves in Mexico.
An alien-looking baby was born in India.
A new technique tailored by NASA can help in searching for extraterrestrial life on Jupiter's moon Europa.
Why are people so convinced that aliens exist?
Mysterious dark circular patterns were seen at a Siberian lake known as Lake Baikal.
The selfie mirror will allow looking for signs of life on Mars from a new angle.
Scientists have detected radio signals from deep space.
Scientists want to say "Hello" to the closest but distant neighborhoods of the planet Earth in the universe.
New receivers have been installed in the ALMA radio telescope and this promises to help detect the presence of water in the cosmos.