Did humans contaminate the Moon earlier this year? Israel sent a lander to the Moon back in April 2019 which, sadly, crashed as it attempted to land. On board, as it happens, was an archive of human knowledge and samples of earth life ... including some tiny, but extremely hardy little critters known as tardigrades (a.k.a. Moss Piglets, or Water Bears). So have we polluted the pristine lunar surface with Earth biology now? Nah — we've been doing that for years, apparently ...