In October 2023, ana scientific overview of detecting life on the planet Earth from afar was reported.<ref name="NAT-20231016">{{cite journal |last=Witze |first=Alexandria |title=How would we know whether there is life on Earth? This bold experiment found out - Thirty years ago, astronomer Carl Sagan convinced NASA to turn a passing space probe’s instruments on Earth to look for life — with results that still reverberate today. |url=https://www.nature.com/articles/d41586-023-03230-z |date=16 October 2023 |journal=[[Nature (journal)|Nature]] |volume=622 |pages=451-452 |doi=10.1038/d41586-023-03230-z |url-status=live |archiveurl=https://archive.ph/nVVIZ |archivedate=19 October 2023 |accessdate=21 October 2023 }}</ref>
