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The Project Gutenberg EBook of The Holes Around Mars, by Jerome Bixby This eBook is for the use of anyone anywhere at no cost and with almost no.
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It was the first rock sample captured by the drill since October , as a mechanical fault meant it has been out of action since December It lets Curiosity drill using the force of its robotic arm, a little more like a human would while drilling into a wall at home. Digital Issues Buy a back issue. Renew my subscription Give a Gift Manage my subscription.

Image of the Day Space 24 May A hole on Mars. The Curiosity rover has learnt a new way to drill holes on the Red Planet.

Jerome Bixby's The Holes Around Mars by Jerome Bixby | NOOK Book (eBook) | Barnes & NobleĀ®

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Looking for more science? When that happens, according to the researchers' simulations, a window opens in Mars' middle atmosphere between 37 and 56 miles 60 and 90 kilometers in altitude, allowing water vapor to pass through and escape into the upper atmosphere.

At other times, the lack of sunlight shuts down Martian water cycles almost entirely. Mars is also different from Earth in that the Red Planet gets frequently overtaken by giant dust storms. Those storms cool the planet's surface by blocking light. But the light that doesn't reach Mars' surface instead gets stuck in the atmosphere, warming it and creating conditions better suited to moving water around, the scientists' simulations showed.

The Holes Around Mars - eBook

Under global dust-storm conditions, like the one that enveloped Mars in , tiny particles of water ice form around the dust particles. Those lightweight ice particles float into the upper atmosphere more easily than other forms of water, so during those periods more water move into the upper atmosphere. Dust storms can move even more water into the upper atmosphere than the southern summers, the researchers showed.


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Once the water passes through the middle boundary, the researchers wrote, two things happen: Some of the water drifts north and south, toward the poles, where it's eventually deposited. But ultraviolet light in the upper atmosphere can also sever the bonds between the oxygen and hydrogen in the molecules, causing the hydrogen to escape into space, leaving the oxygen behind. This process could be part of the story of how a once-drenched Mars has ended up so dry in its current epoch, the researchers wrote.