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Mar 16, 2021 · A new theory holds fresh clues. Mars once had water flowing over the surface, but it disappeared billions of years ago. A new study suggests that in addition to being lost to space, much of the ...
May 25, 2022 · That is, the driving force of the change didn’t seem to be carbon dioxide. “Carbon dioxide is a strong greenhouse gas, so it really was the leading candidate to explain the drying out of Mars,” said Kite, an expert on the climates of other worlds. “But these results suggest it’s not so simple.”. There are several alternative options.
Mar 30, 2017 · The new result reveals that solar wind and radiation were responsible for most of the atmospheric loss on Mars, and the depletion was enough to transform the Martian climate. The solar wind is a thin stream of electrically conducting gas constantly blowing out from the surface of the sun. The early Sun had far more intense ultraviolet radiation ...
Nov 5, 2015 · A NASA spacecraft orbiting Mars spies solar storms blowing Martian atmosphere away. Artist’s rendering of a solar storm hitting Mars and stripping ions from the planet's upper atmosphere. Credit ...
Sep 6, 2024 · Earth orbits the sun in a slightly uneven circle, keeping an average distance of 93 million miles. Mars’s orbit is much more elliptical—with an aphelion, or furthest remove from the sun, of ...
Oct 9, 2024 · Curiosity Rover Finds Clues to How Mars Became a Lifeless Wasteland. Mars is generally regarded as a place that can't support life, but new research sheds light on how the Red Planet evolved into ...
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Dec 2, 2023 · The planet was obviously a barren, inhospitable wasteland. Clues to Mars’ past began to trickle out, however. Beginning with the Viking landers and orbiters in 1976, it became starkly clear that ...
