The issue of extraterrestrial aliens visiting Earth has long been moot. Whether or not aliens have visited the planet is reported to be immediately revealed.
This evidence will be revealed directly by the British Ministry of Defense. Reportedly, the ministry will soon release some secret documents that will prove the existence of aliens who had previously visited the UK in 1983. 
In 2010, from Cassini satellite data, NASA experts found important evidence showing the existence of a primitive alien life on Titan, the moon of Saturn 
. The experts concluded in two papers. In the first paper, in the journal Icarus, it was stated that the hydrogen that flows in the planet's atmosphere disappears on the surface, indicating that the aliens might be breathing. In the second paper, in the Journal of Geophysical Research, it was concluded that there was a shortage of chemicals on the surface. These substances may be consumed by a life. Chris McKay, an astrobiologist at the NASA Research Center, stated that this process of hydrogen consumption is similar to the human process of consuming oxygen on earth.
There is the idea that aliens may be sending signals into space 