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MAVEN Reveals How Mars Misplaced Its Ambiance and Grew to become a Barren World

by Staff Reporter
June 7, 2025
in Tech
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MAVEN Reveals How Mars Misplaced Its Ambiance and Grew to become a Barren World
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Mars was a wetter world. Scientists have lengthy pointed to proof like dried-up riverbeds and historical lake basins. For that a lot water to exist, Mars would have wanted a thicker environment — one that might maintain in warmth and stress. But as we speak, Mars is chilly, dry, and barely has any air. For the primary time, NASA’s MAVEN spacecraft has immediately noticed a long-suspected course of liable for stripping away Mars’ environment — sputtering. Understanding when and the way that environment disappeared is essential for reconstructing the planet’s local weather historical past and assessing its previous potential to help life.

Sputtering

According to MAVEN’s findings from a brand new examine, sputtering is a big mechanism in atmospheric escape. In this mechanism energetic particles from photo voltaic wind collide with Mars’ higher environment. These collisions, in precept, switch sufficient vitality to impartial atoms and assist break them free from the planet’s gravitational pull, flinging them into house.

“It’s like doing a cannonball in a pool,” Shannon Curry, the principal investigator of the MAVEN mission on the University of Colorado Boulder who led the brand new examine, mentioned in a press release. “The cannonball, in this case, is the heavy ions crashing into the atmosphere really fast and splashing neutral atoms and molecules out.”

Using 9 years of information, scientists created detailed maps of argon. The examine additionally revealed that sputtering occurs at a charge 4 occasions increased than earlier fashions predicted, and intensifies throughout photo voltaic storms.

This suggests the method was way more excessive billions of years in the past, when the younger solar was extra energetic and Mars had already misplaced its magnetic discipline. Without magnetic safety, the planet’s environment was susceptible to relentless photo voltaic wind. This accelerated the lack of environment and resulting in the disappearance of floor water.

 

Tags: AtmosphereBarrenLostmarsmavenNASAnasa’s maven confirms sputtering stripped mars of its atmosphere marsrevealsWorld
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