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- We have not yet discovered life on any other planet, and we have not seen any scientifically supported evidence for extraterrestrial life.
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Oct 28, 2023 · Madhusudhan led a study, published in October 2023 in The Astrophysical Journal Letters, that detected hints of an ocean on a planet called K2-18 b, located more than 100 light-years away. Their...
- Patrick Pester
- Is E.T. phoning us from Proxima Centauri? The answer to weird signals happening in the universe is never aliens, until maybe it is. Earlier this month, researchers announced that they had captured a very mysterious beam of energy in the radio part of the electromagnetic spectrum at 980 megahertz, coming from the closest star to our own.
- Alien bacteria might live in the clouds of Venus. Astrobiologists were a-twitter with anticipation and skepticism in September when news broke of potential evidence of life in the upper clouds of Venus.
- 'Oumuamua could still be an alien artifact. Two years ago, scientists spotted a cigar-shaped object hurtling through the solar system. Dubbed 'Oumuamua, the entity is considered by most to be an interstellar comet flung out from around another star.
- Navy declassifies UFO videos but don't believe the hype. A fair number of Earthlings don't care what ambiguous evidence scientists come up with to show that aliens are out there.
- 1976, The Viking Mars landers detect chemical signatures indicative of life. Tests performed on Martian soil samples by NASA’s Viking landers hinted at chemical evidence of life.
- 1977, The unexplained extraterrestrial “Wow!” signal is detected by an Ohio State University radio telescope. In August 1977 an Ohio State University radio telescope detected an unusual pulse of radiation from somewhere near the constellation Sagittarius.
- 1996, Martian “fossils” are discovered in meteorite ALH84001 from Antarctica. NASA scientists controversially announced in 1996 that they had found what appeared to be fossilised microbes in a potato-shaped lump of Martian rock.
- 2001, More rigorous calculations connected to the 1960s “Drake equation” suggests that our galaxy may contain hundreds of thousands of life-bearing planets.
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Part of the difficulty in searching for life of any sort is that scientists don’t agree on how life started in the first place—or what life even is. One good attempt at a definition came in 2011 from geneticist Edward Trifonov, who collated more than 100 interpretations of the word “life” and distilled them into one overarching idea: it’s “self-rep...
The first issue of the academic journal Astrobiology, more than two decades ago, featured an article by Kenneth Nealson and Pamela Conrad called “A Non-Earth-centric Approach to Life Detection.” But taking a non-Earth-centric approach isn’t easy for our brains, which formed in this environment. We are notoriously bad at picturing the unfamiliar. “I...
LAB’s research is a combination of fieldwork, lab projects and computation. One project is a planned visit to Canada’s Kidd Creek Mine, which drops nearly 10,000 feet into the ground. Its open pit looks like a quarry reaching toward the seventh circle of hell. At those depths, around 2.7 billion years ago, an ocean floor brewed with volcanic activi...
There is plenty of skepticism outside LAB as well. Some scientists question the need to search for unfamiliar life when we still haven’t done much searching for extraterrestrial life as we know it. “I think there’s still a lot we can explore before we go to life as we don’t know it,” says Martina Preiner of the Royal Netherlands Institute for Sea R...
Nov 25, 2023 · Emily Mitchell, a paleobiologist at the University of Cambridge, points out that, while there is fossil evidence of life on Earth at least 3.5 billion years ago, no large multicellular...
Sep 10, 2021 · Sep 10, 2021. Article. Do aliens exist? Extraterrestrial life has never been discovered, but that doesn’t mean it doesn’t exist. At NASA, astrobiologists like Lindsay Hays are trying to answer one of the most profound questions ever: Is there life beyond Earth? Do Aliens Exist? We Asked a NASA Scientist. Watch on. Do aliens exist?
Nov 10, 2021 · November 10, 2021. 8 min read. How Scientists Could Tell the World if They Find Alien Life. Sparked by major advances in their field, astrobiologists are grappling with how best to discuss...
