These Scientists Spent Decades Pushing NASA to Go Back to #Venus. Now They’re on a Hot Streak.
Our next-door planet is similar to #Earth in size and composition, but extreme conditions made Venus a #hellscape. Devoted researchers want to know what caused their wildly divergent paths.
by Megan I. Gannon
"The spacecraft would launch around 2029 and drop a parachute-equipped, aeroshell-protected spherical probe that would sail through the cloud cover. Using spectrometers similar to the ones developed for the chemistry lab aboard Curiosity, it would measure inert gases like krypton and xenon (think of them like fossils of the early processes that formed Venus’ atmosphere) as well as hydrogen isotopes, which could determine when and at what rates the planet lost the #oceans it is suspected to have had in its early history.
"That water-loss data would be hugely important. Michael Way, a physical scientist at NASA’s Goddard Institute for Space Studies in New York, and his colleagues produced models in 2016 suggesting Venus not only had #water before Earth did but also was covered in a shallow #ocean for some 3 billion years. Those findings have energized researchers and revived the image of a wet world, at least in its past. 'You put that 3 billion years of water on Venus next to the 300 million years that Mars had water and you realize that if we’ve been looking for signs of life somewhere else in our own solar system, maybe we’ve been barking up the wrong tree,' says Dyar."
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