Fragments of a meteorite that hit Australia in 1969 have revealed particles that are as much as 7 billion years old — and have also demonstrated that space rocks often stink like “rotten peanut butter” or “wet hay.” The sniff test is a curious byproduct of the research because “scientists are human, too,” says researcher Jennika Greer, co-author of a study published in Proceedings of the National Academy of Sciences. click on title above to open article (after click on the “not right now” box