biosignatures

The Life We Almost Missed

I was sitting in the xenobiology lab at three in the morning, staring at a chromatography readout from the Ner River delta, when I understood that I had been doing my job wrong for eight years. Not wrong, exactly. Not careless. But biased in a way so fundamental that I hadn’t even noticed it was there. I had been looking for life the way Earth taught me to look for life. And a thirty-eight-year-old dispatch from a team at Arizona State University had just shown me the wall I’d been pressing my