Melissa Floyd, a NASA scientist wants to create a device that will be capable of finding bacteria or another type of single-celled microorganism called archaea in other planets.
James Mattis, the United States secretary of defence has said that the cosmos is a developing warzone, and conspiracy theorists soon concluded that an alien invasion is imminent
This mysterious ancient organisms first appeared on earth 500-million years ago during the Ediacaran period but the reason behind its extinction is unknown.
Scientists said that as of now 3815 exoplanets have been discovered but Kepler 452bm or "Earth's cousin", now is known as the most potential candidate to support life.
The former NASA scientists have claimed that during his career he was told not to focus on UFO or aliens as it was a different matter and needed more study.
Scientists analysed the data collected by Cassini and found that there is a huge possibility that Saturn's moon is the best place to support life apart from Earth.
Chris Hadfield, an astronaut who retired from the Canadian Space Agency has claimed that the rockets developed by NASA and SpaceX are not capable to carry humans to Mars