2025: The Year We Got Closer to Extraterrestrial Life

2025 emerged as a landmark year in the search for extraterrestrial life, with new discoveries and scientific missions bringing humanity closer to answering the age-old question: is there life beyond Earth?

NASA has created the Confidence of Life Detection (CoLD) scale with seven levels to evaluate findings:

1. Detection of a possible signal
2. Exclusion of contamination
3. Confirmation that it could be biological
4. Exclusion of non-biological explanation
5. Independent evidence
6. Exclusion of alternative hypotheses
7. Independent confirmation

To date, only one discovery has reached this scale, and it concerns Mars.