One possible recipe for life on Titan is a bust Skip to content Subscribe today Every print subscription comes with full digital access Subscribe Now Menu All Topics Health Humans Anthropology Health & Medicine Archaeology Psychology View All Life Animals Plants Ecosystems Paleontology Neuroscience Genetics Microbes View All Earth Agriculture Climate Oceans Environment View All Physics Materials Science Quantum Physics Particle Physics View All Space Astronomy Planetary Science Cosmology View All Magazine Menu All Stories Multimedia Reviews Puzzles Collections Educator Portal Century of Science Unsung characters Coronavirus Outbreak Newsletters Investors Lab About SN Explores Our Store SIGN IN Donate Home INDEPENDENT JOURNALISM SINCE 1921 SIGN IN Search Open search Close search Home INDEPENDENT JOURNALISM SINCE 1921 All Topics Earth Agriculture Climate Oceans Environment Humans Anthropology Health & Medicine Archaeology Psychology Life Animals Plants Ecosystems Paleontology Neuroscience Genetics Microbes Physics Materials Science Quantum Physics Particle Physics Space Astronomy Planetary Science Cosmology Tech Computing Artificial Intelligence Chemistry Math Science & Society All Topics Health Humans Humans Anthropology Health & Medicine Archaeology Psychology Recent posts in Humans Health & Medicine AI may be giving teens bad nutrition advice By Lily Burton9 minutes ago Health & Medicine ‘Smart underwear’ measures how often humans fart By Tina Hesman SaeyMarch 10, 2026 Health & Medicine How does early pregnancy lower breast cancer risk? Odd cells could offer clues By Meghan RosenMarch 9, 2026 Life Life Animals Plants Ecosystems Paleontology Neuroscience Genetics Microbes Recent posts in Life Space One possible recipe for life on Titan is a bust By Tina Hesman Saey11 hours ago Genetics The Amazon molly — a sex-skipping fish — hacks evolution By Elie Dolgin13 hours ago Animals Submerged bumblebee queens breathe underwater By Erin Garcia de JesúsMarch 10, 2026 Earth Earth Agriculture Climate Oceans Environment Recent posts in Earth Plants Tree tops sparkle with electricity during thunderstorms By Lily BurtonMarch 10, 2026 Climate Lakes are growing in Alaska. That’s not entirely a bad thing By Douglas FoxMarch 9, 2026 Climate Hundreds of studies have missed how much the oceans are rising By Nikk OgasaMarch 4, 2026 Physics Physics Materials Science Quantum Physics Particle Physics Recent posts in Physics Plants Tree tops sparkle with electricity during thunderstorms By Lily BurtonMarch 10, 2026 Physics When the pressure’s off, this superconductor appears to break records By Emily ConoverMarch 9, 2026 Chemistry This molecule puts a new twist on the Möbius strip By Emily ConoverMarch 5, 2026 Space Space Astronomy Planetary Science Cosmology Recent posts in Space Space One possible recipe for life on Titan is a bust By Tina Hesman Saey11 hours ago Astronomy A strange ‘chirp’ in a brilliant stellar blast points to a magnetar By Jay Bennett13 hours ago Planetary Science NASA’s DART spacecraft changed an asteroid’s orbit around the sun By Lisa GrossmanMarch 6, 2026 News Space One possible recipe for life on Titan is a bust A lab experiment suggests that cell-like bubbles may not form in the moon’s methane lakes A lab simulation of Titan may burst the bubble of scientists who hoped cell-like spheres might form in the moon’s methane lakes (some seen here in radar images taken by NASA’s Cassini spacecraft). NASA/JPL-Caltech/ASI/USGS By Tina Hesman Saey 11 hours ago Share this:Share Share via email (Opens in new window) Email Share on Facebook (Opens in new window) Facebook Share on Reddit (Opens in new window) Reddit Share on X (Opens in new window) X Print (Opens in new window) Print Hopes for life inside bubbles on Titan have deflated. Oceans of liquid methane and ethane on Saturn’s biggest moon may not support the formation of cell-like spheres called azotosomes, researchers report March 11 in Science Advances. Titan doesn’t have liquid water and is so cold that membranes like those that encase cells and organelles in Earth organisms would freeze and shatter there. That would normally exclude the moon as a likely place for life. But in 2015, some computer simulations suggested that a component of synthetic rubber called vinyl cyanide, or acrylonitrile, could make azotosomes in liquid methane. If true, that might mean that life on Titan is possible because the compound could make protective shells around any possible cells on the moon. A later simulation, though, predicted that azotosomes couldn’t self-assemble on Titan. Lab experiments burst a hypothesis that a chemical found on Titan might be able to form bubbles called azotosomes (illustrated here) that would serve as cell membranes for alien organisms.NASA No lab experiments have been done to see which simulation is right, says planetary scientist Tuan Vu of NASA’s Jet Propulsion Laboratory in Pasadena, Calif. So Vu and JPL colleague Robert Hodyss devised an experiment in which they sprinkled solid vinyl cyanide over supercold liquid ethane or liquid methane. That mimics “one way that they can come into contact on Titan, when you have acrylonitrile forming in the atmosphere [and] coming down onto the surface where it condensed as a solid, and it comes into contact with a lake,” Vu says. Sign up for our newsletter We summarize the week's scientific breakthroughs every Thursday. Liquid ethane and vinyl cyanide form crystals together, not bubbles, the researchers found. And no azotosomes formed in liquid methane either. Those results seem to pop the bubble hypothesis. But the experiment doesn’t rule out life on Titan, Vu says. There may be other ways azotosomes could form, he says. Or perhaps Titanic life-forms don’t need azotosomes. “We tend to interpret life as we know it, because that’s the only form of life that we know,” Vu says. “But on Titan it could be life as we don’t know.” Questions or comments on this article? E-mail us at feedback@sciencenews.org | Reprints FAQ Citations T.H. Vu and R. Hodyss. Experimental insights into the azotosome hypothesis in Titan’s lake fluids. Science Advances. Published online March 11, 2026. doi: 10.1126/sciadv.aed1426. H. Sandström and M. Rahm. Can polarity-inverted membranes self-assemble on Titan? Science Advances. Vol. 6, January 24, 2020. doi: 10.1126/sciadv.aax0272. About Tina Hesman Saey E-mail X Tina Hesman Saey is the senior staff writer and reports on molecular biology. She has a Ph.D. in molecular genetics from Washington University in St. Louis and a master’s degree in science journalism from Boston University. We are at a critical time and supporting climate journalism is more important than ever. Science News and our parent organization, the Society for Science, need your help to strengthen environmental literacy and ensure that our response to climate change is informed
One possible recipe for life on Titan is a bust
