This isn’t a UFO sighting, but it is very relevant to the UFO phenomena.
On February 6, 2013, scientists analyzing data from the Kepler Space Telescope announced that 6% of all red dwarf stars have rocky planets in the habitable zone. 6% is a huge number. Red dwarfs are the most common type of star. There are at least 75 billion in our galaxy. So that means there are at least 4.5 billion potentially Earth-like planets orbiting red dwarfs just in our galaxy alone. Earth-Like Planets are Everywhere! 4.5 Billion Orbit Red Dwarf Stars in Milky Way Galaxy!