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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

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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NASA Selects Missions to Study Sun, its Effects on Space Weather

One of the selected missions will study how the Sun drives particles and energy into the solar system

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NASA, Missions, Sun
The launch date for the two missions is no later than August 2022, the US space agency said in a statement on Friday. Pixabay

NASA has selected two new missions to study the Sun and its dynamic effects on space weather.

The launch date for the two missions is no later than August 2022, the US space agency said in a statement on Friday.

One of the selected missions will study how the Sun drives particles and energy into the solar system and a second will study the Earth’s response.

“These missions will do big science, but they’re also special because they come in small packages, which means that we can launch them together and get more research for the price of a single launch,” said Thomas Zurbuchen, Associate Administrator for the Science Mission Directorate at NASA headquarters in Washington.

NASA, Missions, Sun
NASA has selected two new missions to study the Sun and its dynamic effects on space weather. Pixabay

The Sun generates a vast outpouring of solar particles known as the solar wind, which can create a dynamic system of radiation in space called space weather.

Near Earth, where such particles interact with our planet’s magnetic field, the space weather system can lead to profound impact on human interests, such as astronauts’ safety, radio communications, GPS signals and utility grids on the ground.

The more we understand what drives space weather and its interaction with the Earth and lunar systems, the more we can mitigate its effects – including safeguarding astronauts and technology crucial to NASA’s Artemis programme to the Moon.

One of the two missions that NASA has selected is the Polarimeter to Unify the Corona and Heliosphere, or PUNCH. This mission will focus directly on the Sun’s outer atmosphere, the corona, and how it generates the solar wind.

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The second mission is Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellites, or TRACERS. The TRACERS investigation was partially selected as a NASA-launched rideshare mission, meaning it will be launched as a secondary payload with PUNCH.

TRACERS will observe particles and fields at the Earth’s northern magnetic cusp region – the region encircling the Earth’s pole, where our planet’s magnetic field lines curve down towards the Earth, NASA said. (IANS)