'Molecular time travelers' are one piece of the puzzle to understand whether there's life beyond Earth.
What if we thought of our ancestors as a form of alien life?
Today's life, he says, is cellular and based on DNA, but neither cells nor DNA were present in the earliest forms of life on Earth. By association,"these were things that had to evolve in early evolutionary history," he said."So understanding how and why these characteristics of life evolved on early Earth can inform whether or not we would expect the same things to be present in extraterrestrial organisms.
Adrienne Kish, a microbiologist with the National Museum of Natural History in Paris, said we also need to remember how commonly life can arise in places on Earth that are utterly inhospitable for humans. An example is hydrothermal vents deep in the ocean.
Norge Siste Nytt, Norge Overskrifter
Similar News:Du kan også lese nyheter som ligner på denne som vi har samlet inn fra andre nyhetskilder.
Boeing’s Starliner spacecraft returns to Earth, wrapping up critical test missionUp next: people riding on Starliner someday
Les mer »
Uncrewed Boeing Starliner capsule undocks from space station for return to EarthThe new and uncrewed Boeing Starliner capsule undocked from the International Space Station on Wednesday to begin a descent back to Earth from its first journey to the outpost, wrapping up a high-stakes test flight as NASA's next vehicle for carrying humans to orbit.
Les mer »
Physicists predict Earth will become a chaotic world, with dire consequencesPaul M. Sutter is a research professor in astrophysics at SUNY Stony Brook University and the Flatiron Institute in New York City. He regularly appears on TV and podcasts, including 'Ask a Spaceman.' He is the author of two books, 'Your Place in the Universe' and 'How to Die in Space,' and is a regular contributor to Space.com, Live Science, and more. Paul received his PhD in Physics from the University of Illinois at Urbana-Champaign in 2011, and spent three years at the Paris Institute of Astrophysics, followed by a research fellowship in Trieste, Italy.
Les mer »
Uncrewed Boeing Starliner capsule undocks from space station for return to EarthThe uncrewed new Boeing Starliner capsule undocked from the International Space Station on Wednesday to begin a descent back to Earth from its first journey to the outpost, nearing the end of a high-stakes test flight as NASA's next vehicle for carrying humans to orbit.
Les mer »