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14. Juli 2014 · Learn how NASA and its partners are using current and future telescopes to find and characterize exoplanets that could harbor life. Watch a video of experts discussing the scientific and technological challenges and opportunities of the search for life beyond Earth.
Explore the science and history of searching for life on other worlds, from the Drake equation to the search for alien radio signals. Learn how extreme environments on Earth may help us find life beyond our planet.
- Life Beyond Earth: A Universe of Possibilities
- New Optimism For Life in Enceladus’ Ocean
- Super-Earths More Habitable Than Earth?
- A Warmer, Wetter Early Mars?
- Mars: Land of Lakes?
- More Evidence For Ancient Ocean on Mars
- Life Beyond Earth: Where Will We Find It First?
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Is there life beyond Earth? Whether elsewhere in our own solar system, or farther out among the exoplanets, that question is still unanswered. But the answers might be getting closer. And many recent discoveries seem to bolster the possibility of extraterrestrial life. September 2022 has been a great illustration, with the announcements of several ...
First, Enceladus. Like Jupiter’s moon Europa, this small moon of Saturn is thought to have a subsurface ocean of liquid water. In 2018, a new analysis of data from NASA’s Cassini spacecraft – obtained when the spacecraft flew through water vapor plumes, erupting into space from this subsurface ocean – found some tantalizing ingredients suggesting E...
Astronomer Chris Impey posted another intriguing article in The Conversation on September 23, 2022. In it, he makes the case that super-Earths – exoplanets larger and more massive than Earth but smaller and less massive than Neptune – might not just be habitable. They might be even more habitablethan our own Earth. They are also common, estimated n...
For decades, scientists have debated whether Mars was warmer and wetter a few billion years ago. Or was it cold and wet? Or cold and mostly dry? A new press release from the SETI Institute outlines new evidence that Mars was born wet, with a dense atmosphere. That could have allowed warm oceans to exist for millions of years. The researchers develo...
Another study, from researchers in Hong Kong, also supports a previously wetter Mars. The study suggests that scientists have underestimated the number of lakes that once existed on Mars. According to Joseph Michalski, a geologist at the University of Hong Kong: According to the new paper, most of the already known Martian lakes date back to about ...
Finally, Space.com reported that China’s Zhurong rover has found new evidence for an ancient ocean on Mars. Zhurong is exploring the ancient plains of Utopia Planitia. If, as some scientists contend, Mars did once have an ocean, then Utopia Planitia, a huge basin, was likely part of it. According to the China National Space Administration (CNSA), t...
While none of these new findings provethere is extraterrestrial life, they do show that the possibilities are increasing. While we still only know about life on Earth, there may be multiple scenarios – both in our solar system and far beyond – in which living organisms could originate and evolve. Where will we find the first definitive evidence? In...
Explore the latest findings on Enceladus' ocean, super-Earths, and early Mars, and how they could support life. Learn about the geochemistry, astrobiology, and astronomy behind these intriguing worlds.
Observations from the ground and from space have confirmed thousands of planets beyond our solar system. Our galaxy likely holds trillions. But so far, we have no evidence of life beyond Earth. Is life in the cosmos easily begun, and commonplace? Or is it incredibly rare?
18. Juli 2023 · While further human exploration of the solar system in decades ahead seems within reach, no existing or planned technology could preserve human life for the tens of thousands of years it might take to reach another star. A shortcut to finding life, of course, would be picking up signals or evidence of intelligent life.
So far, the only life we know of is right here on planet Earth. But NASA is looking for signs of life in our solar system and on some of the the thousands of planets we've discovered beyond it, on exoplanets. We can probe alien atmospheres for biosignatures, which could indicate life below.
25. Sept. 2018 · NASA is hosting a workshop to assess the scientific and technological aspects of searching for signs of technological life beyond Earth. Learn about the history, methods and challenges of this field, and how NASA could support it in the future.
