Det senaste vetenskapliga samtalet om utomjordiskt liv visar en stark konsensus bland experter, även om direkta bevis fortfarande saknas. En omfattande undersökning publicerad i Nature Astronomy 2024, med över 1 000 deltagande forskare, ger ny insikt.
🛸 Konsensus om grundläggande liv
- 86,6 % av astrobiologer anser att enklaste livsformer (t.ex. mikrober) troligtvis finns i universum136.
- Mindre än 2 % av experterna motsätter sig detta8.
- Bakomliggande faktorer:
🧠 Komplext och intelligent liv
- 67,4 % av astrobiologer tror på mer avancerade livsformer18.
- För intelligent liv sjunker siffran till 58,2 %35.
- Endast 10,2 % av experterna avfärdar möjligheten till intelligenta utomjordingar8.
🔬 Aktuella forskningsframsteg
- James Webb-teleskopet har identifierat molekyler som dimetylsulfid (DMS) på exoplaneten K2-18 b – en potentiell biosignatur49.
- Planerade provtagningsmissioner till Mars och ismånar kan ge avgörande svar inom 10-30 år79.
- SETI söker nu fokuserat efter lasersignaler med uppgraderad utrustning10.
🎯 Framtidsutsikter
- NASA:s chefvetare förutspår ”tydliga tecken på liv” innan 20359.
- Astrobiologen Sara Seager betonar att slutgiltigt bevis kräver direkta prover eller avancerad teleskopteknik24.
Sammanfattningsvis anser majoriteten av experterna att universum troligen pulserar av liv – främst enkla former. Teknologiska genombrott kan snart omvandla denna vetenskapliga övertygelse till konkreta bevis.
Citations:
- https://theconversation.com/do-aliens-exist-we-studied-what-scientists-really-think-241505
- https://www.livescience.com/space/extraterrestrial-life/whats-the-best-evidence-weve-found-for-alien-life
- https://www.rte.ie/brainstorm/2025/0129/1492558-aliens-science-astrobiology-proof/
- https://thedebrief.org/evidence-of-alien-life-became-one-of-2024s-hot-topics-could-2025-be-the-year-we-learn-were-not-alone/
- https://singularityhub.com/2025/01/28/does-extraterrestrial-life-exist-heres-what-scientists-really-think/
- https://www.zmescience.com/science/news-science/scientists-believe-alien-life/
- https://www.nasa.gov/solar-system/planets/mars/do-aliens-exist-we-asked-a-nasa-scientist-episode-5/
- https://www.durham.ac.uk/research/current/thought-leadership/2025/01/do-aliens-exist-we-studied-what-scientists-really-think/
- https://www.cbsnews.com/news/nasa-predicts-alien-life-could-be-found-by-2025/
- https://www.bbc.com/news/science-environment-66950930
- https://www.esa.int/Science_Exploration/Human_and_Robotic_Exploration/Exploration/Extraterrestrial_life
- https://www.nature.com/articles/s41550-024-02451-0
- https://www.planetary.org/articles/are-aliens-real
- https://www.popularmechanics.com/science/a63771409/first-contact-with-aliens/
- https://www.americanscientist.org/article/alien-life-is-no-joke
- https://www.bbc.com/future/article/20231024-how-aliens-might-detect-our-existence-on-earth
- https://www.scientificamerican.com/article/the-search-for-extraterrestrial-life-as-we-dont-know-it/
- https://astrobiology.nasa.gov/about/
- https://theconversation.com/do-aliens-exist-we-asked-five-experts-161811
- https://uk.news.yahoo.com/aliens-exist-studied-scientists-really-132342661.html
- https://www.reddit.com/r/astrophysics/comments/13xqk6o/do_most_astrophysicists_believe_in_alien_life/
- https://cnas.ucr.edu/media/2024/12/31/evidence-alien-life-became-one-2024s-hot-topics-could-2025-be-year-we-learn-were
- https://www.reuters.com/science/was-emergence-intelligent-life-earth-just-fluke-some-scientists-think-not-2025-02-14/
- https://www.scientificamerican.com/article/nasas-latest-asteroid-sample-hints-at-lifes-extraterrestrial-origins/
- https://www.cnn.com/2015/04/08/us/feat-nasa-scientist-alien-life/index.html
- https://www.bbc.com/future/article/20240308-how-the-hunt-for-alien-life-is-hotting-up
- https://nypost.com/2025/01/28/science/super-earth-20-light-years-away-could-harbor-alien-life/
- https://news.arizona.edu/employee-news/new-conversation-extraterrestrial-life-may-look-nothing-life-earth-so-astrobiologists
- https://www.vox.com/2015/4/8/8371083/nasa-alien-life
- https://www.csiro.au/en/news/all/articles/2025/january/searches-for-alien-life
- https://en.wikipedia.org/wiki/Extraterrestrial_life
- https://www.rochester.edu/newscenter/nasa-brings-standards-of-evidence-to-the-search-for-ufos-527122/
- https://www.space.com/29041-alien-life-evidence-by-2025-nasa.html
- https://www.youtube.com/watch?v=kPUr_p5FA2Y
