VERDICT: MISLEADING The viral TikTok claim "NASA Found Life On Another Planet" is misleading. NASA has NOT confirmed or found life on another planet. As of now, the only known life is on Earth. However, the claim distorts real, ongoing scientific work involving "potential biosignatures" — intriguing chemical/mineral signals that MIGHT have a biological origin but are not confirmed evidence of life. Two claim-linked findings: 1. NASA's own science page states plainly: "So far, the only life we know of is right here on our planet Earth. But we're looking." NASA explicitly frames the search as ongoing and unconfirmed — no life has been found on any other world. 2. The strongest recent "hints" are potential biosignatures, not confirmed life: - On the exoplanet K2-18b, University of Cambridge-led astronomers detected possible dimethyl sulfide (DMS)/dimethyl disulfide (DMDS) — molecules produced by life on Earth — using JWST. But the signal is only at "three-sigma" significance (0.3% chance of being random), well below the "five-sigma" threshold required for a scientific discovery. The lead researcher, Prof. Nikku Madhusudhan, explicitly says it is "vital to obtain more data before claiming that life has been found on another world" and that unknown chemical processes could explain the observations. - On Mars, NASA's Perseverance rover found a rock ("Cheyava Falls") containing "potential biosignatures," but NASA defines a potential biosignature as "a substance or structure that might have a biological origin but requires more data or further study before a conclusion can be reached about the absence or presence of life." The minerals can also form abiotically (without life). So the claim takes genuine but unconfirmed "potential biosignature" findings and inflates them into a definitive "NASA found life" headline. That is misleading — no life has been confirmed on any planet beyond Earth. Primary sources (government + university): - https://science.nasa.gov/exoplanets/can-we-find-life/ (NASA — states only life known is on Earth; search is ongoing) - https://www.nasa.gov/news-release/nasa-says-mars-rover-discovered-potential-biosignature-last-year/ (NASA — Mars "potential biosignature," explicitly requiring more study) - https://www.cam.ac.uk/stories/strongest-hints-of-biological-activity (University of Cambridge — K2-18b DMS/DMDS at 3-sigma, not yet confirmed; peer-reviewed in The Astrophysical Journal Letters, DOI: 10.3847/2041-8213/adc1c8)