Tuesday, 25 April, 2017

Make Mars' habitable with artificial magnetic field? NASA scientists say 'could be'

NASA scientist has proposed a giant magnetic shield to make Mars habitable to humans in a matter of years Space 0
Garry Little | 08 March, 2017, 00:34

"In the future it is quite possible that an inflatable structure (s) can generate a magnetic dipole field at a level of perhaps 1or 2 Tesla (or 10,000 to 20,000 Gauss) as an active shield against the solar wind", Green said.

Once this happens, the carbon in the atmosphere would trap heat, triggering a greenhouse effect that could melt Mars's water ice, giving back its liquid water, which means Earth-like flowing rivers and oceans.

The proposal (.PDF) relies on the theory that over four billion years ago, the planet's magnetic field vanished, turning the planet from a warm, wet environment to a dry husk. This would help melt frozen carbon dioxide on the northern polar cap on the Red Planet.

The lower section of Mount Sharp on Mars taken by NASA on August 18, 2012. Mars's thin atmosphere would be filled by the greenhouse effect, with the planet heating up around the equator. Held last February 27 to March 1 at NASA's headquarters in Washington, D.C., one of the most notable presentations came from Dr. James Green - NASA's Planetary Science Division Director.

"A greatly enhanced Martian atmosphere, in both pressure and temperature, that would be enough to allow significant surface liquid water would also have a number of benefits for science and human exploration in the 2040s and beyond".

Once the solar radiation is stopped, Mars's atmosphere can regain its losses in a few years. Green argued, would allow for human explorers to study the planet in much greater detail, and help determine its habitability, since numerous elements that pointed towards Mars being habitable in the past would slowly seep back into and onto the planet's environment.

As far as scientists believe, Mars used to have a thick atmosphere and a considerable amount of water.

To test the idea, researchers have conducted a series of simulations using their proposed artificial magnetosphere and found it is strong enough to counter solar wind and space radiation.

"It may be feasible that we can get up to these higher field strengths that are necessary to provide that shielding". "We need to be able then to also modify that direction of the magnetic field so that it always pushes the solar wind away", said Green.

This NASA handout image, released on June 13, 2008 shows the Robotic Arm on NASA's Phoenix Mars Lander with a sample of martian soil as it prepares to move to the spacecraft's microscope station.

Researchers said that an artificially created magnetic shield may speed up the restoration of the Red Planet's atmosphere, which could eventually help make Mars more habitable for future human explorers and colonizers. The scientist said a new shield could help the planet restore its atmosphere.

Recommended

League of Legends creator wins $10 million in bot/hack service lawsuit League of Legends creator wins $10 million in bot/hack service lawsuit The complaint alleged that LeagueSharp violated League's DMCA, as its product evades Riot's anti-cheating software. As a result, the game company filed a lawsuit, where U.S.

Terror suspect Saifullah hiding in Lucknow, terrorists open fire at forces Terror suspect Saifullah hiding in Lucknow, terrorists open fire at forces Earlier, those living in the neighborhood were evacuated from their houses and the entire area was cordoned off. By 3.30 PM, over 30 policemen had started vacating neighboring houses to corner the terrorists.

BIRD FLU IS BACK: USDA Burns 73500 Chickens With Avian Flu BIRD FLU IS BACK: USDA Burns 73500 Chickens With Avian Flu The Asian nation is already facing surging egg prices and has culled nearly 34 million birds amid a domestic bird-flu outbreak. The farm in Tennessee's Lincoln County, along with almost 30 other farms in 6.2 mile radius, has been placed under quarantine.