Scientist Claims to Find Proof of Life on Mars, But The Truth is Far More ComplicatedBy Matthew Loffhagen / December 4, 2019 These Fossils Could Be Long-Dead Aliens NASA According to DiGregorio, these are “trace fossils” which show that aliens once lived on Mars, even if they’re long dead now. Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26