3 ms·

Incidentally, I just submitted the following a few hours ago: http://www.sci-news.com/astronomy/phosphine-biosignature-gas-07957.html http://www.sci-news.com/a

• DennisP 6y ago
  Just so people don't miss this, it's about some scientists who spent several years looking for abiotic forms of phosphine synthesis, couldn't find any that could produce significant amounts, and concluded that phosphine is a really good biosignature.