In 2025, two discoveries gave fresh momentum to the search for alien life. Scientists detected possible chemical signs linked to biological activity on the distant exoplanet K2-18b, while NASA’s Perseverance rover found unusual mineral features in a Martian rock known as Cheyava Falls that could potentially be a biosignature.
The findings quickly sparked headlines suggesting humanity might be closer than ever to answering one of its biggest questions: have we finally found evidence of life beyond Earth?
