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Planets that Circle Alpha Centauri Stars Not Bombarded by Radiation Radiation Dangerous for Life

All planets circling about two of the stars of Alpha Centauri are not likely to be bursting with dangerous X-rays. Planets located in Alpha Centauri A's habitable zone would receive a lower dose of X-ray than similar solar systems that circulate around the sun.

( Optical: Zdenek Bardon; X-Ray: NASA / CXC / Univ. Of Colorado / T. Ayres et al. )

Alpha Centauri, a nearby star system containing the three closest stars beyond the sun, is one of the most important places where astronomers have been looking for life outside the solar system.

Effect of X-Ray

NASA now revealed that data from NASA's Chandra X-ray Observatory suggests that the system, which is approximately 4 light years away from the Earth, is more habitable than ever thought.

Researchers believed that the triple star is so flooded with harmful X-rays, which stymies hopes of habitat around still being discovered planets.

X-ray and related space weather can have a detrimental effect on the unprotected life of these strange worlds. As for planet Mars, for example, high radiation doses removed the planet's atmosphere.

"Exoplanets of other sunny stars can be exposed to analog extreme high energy transients from their hosts, with possibly serious consequences for sustainability," Tom Ayres, of the University of Colorado Boulder, wrote in the Research Notes of the American Astronomical Society.

Observations spanning more than a decade indicate that planets that circulate about the two brightest stars in the Alpha Centauri system are unlikely to be bombarded by large amounts of X-rays from their parent stars.

"Chandra shows us that life should have a fighter chance on planets around any of these stars," says Ayres.

The plan's plan depicts Alpha Centauri's two brightest stars [1
9659004] Astronomers have used Chandra to observe two of the system's stars about every six years since 2005. The data showed the ups and downs of the x-ray activity of the two stars ana

The observations showed that the amount of X-rays from the stars Alpha Centauri A and Alpha Centauri B are in line with what the Earth is from the sun. [19659005] The data actually showed that the prospect of life in relation to the X-ray bombardment is better around Alpha Centauri A than for our own sun. All planets Alpha Centauri As Habitable Zone would receive a lower dose of X-rays on average compared to similar planets in the solar system that circulate the sun.

Alpha Centauri B goes a little worse, while the third star Proxima Centauri, often sends dangerous spots of X-rays about 500 times the average received by the Earth and 50,000 times under a large flare. This means that while X-rays from the two other stars in Alpha Centauri are not dangerous, Proxima can be hostile to life.

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