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Giant magnetic shield can make Mars habitable for Humans, say NASA Scientists

Red Planet once had a thick atmosphere necessary to maintain liquid water

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Red Planet Mars, VOA
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US, Mar 6, 2017: Scientists at NASA have proposed that launching a giant magnetic shield into space to protect Mars from solar winds could give the Red Planet its atmosphere back and make it habitable for humans.

Mars now appears to be a cold desert world and it has no global magnetic field. The cold temperatures and thin atmosphere on the red Planet do not allow liquid water to exist at the surface for long. But it might not have been always so.

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Scientists believe that the Red Planet once had a thick atmosphere necessary to maintain liquid water, and a warmer, potentially habitable climate. It is the collapse of the protective magnetic field billions of years ago that eventually made Mars what it is today — cold and arid.

In a presentation at the Planetary Science Vision 2050 Workshop in Washington, DC last week, NASA scientists proposed that launching a giant magnetic shield into space between Mars and the Sun could help the Red Planet restore its atmosphere and make it suitable for humans to colonise in the future.

The US space agency thinks a powerful-enough magnetic shield launched into space could serve as a replacement for Mars’s own lost magnetosphere, ScienceAlert reported on Monday.

Launching an “artificial magnetosphere” into space between Mars and the Sun could hypothetically shield the Red Planet in the extended magnetotail that trails behind the protective field, NASA’s Planetary Science Division director Jim Green was quoted as saying.

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“This situation then eliminates many of the solar wind erosion processes that occur with the planet’s ionosphere and upper atmosphere allowing the Martian atmosphere to grow in pressure and temperature over time,” the researchers explained in an accompanying paper.

The researchers believe that the magnetic shield could help Mars regain some of its lost Earth-like habitability within the space of a couple of generations. (IANS)

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Another Space Telescope Shuts Down: NASA

Launched by space shuttles in the 1990s, Hubble and Chandra are part of NASA's Great Observatories series.

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Second Space Telescope Shuts Down, NASA Says Pixabay

Another NASA space telescope has shut down and halted science observations.

Less than a week after the Hubble Space Telescope went offline, the Chandra X-ray Observatory did the same thing. NASA said Friday that Chandra automatically went into so-called safe mode Wednesday, possibly because of a gyroscope problem.

Hubble went into hibernation last Friday because of a gyroscope failure.

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This illustration made available by NASA shows the Chandra X-ray Observatory. On Oct. 12, 2018, the space agency said that the telescope automatically went into so-called safe mode on Oct. 10, possibly because of a gyroscope problem. VOA

Both orbiting observatories are old and in well-extended missions: Hubble is 28, while Chandra is 19. Flight controllers are working to resume operations with both.

NASA said it’s coincidental both went “asleep” within a week of one another. An astronomer who works on Chandra, Jonathan McDowell of the Harvard-Smithsonian Center for Astrophysics, tweeted Friday that “Chandra decided that if Hubble could have a little vacation, it wanted one, too.”

Also Read: Astronomers Capture 15,000 Galaxies Using Hubble Telescope

Launched by space shuttles in the 1990s, Hubble and Chandra are part of NASA’s Great Observatories series. The others are the Compton Gamma Ray Observatory, which was also launched in the 1990s but eventually failed and was destroyed, and the Spitzer Space Telescope, launched in 2003 and still working. Each was intended to observe the cosmos in different wavelengths. (VOA)