All about Aliens and Ufo's We believe in aliens

Methane, an indicator of life? Methane (CH4) is an organic molecule present in gaseous form in the Earth's atmosphere. More than 90% of methane on our home planet is produced by living organisms. The recent detection of plumes of methane in .

Alien planets are incredibly common in our own galaxy Milky Way and it may be having as many as 160 billion planets, a six-year-long study has suggested. According to the study, published in the journal Nature, there are over 100 billion .