Published: Sun, November 18, 2018
Research | By Jody Lindsey

'Super-Earth' orbiting Sun's nearest single star discovered

'Super-Earth' orbiting Sun's nearest single star discovered

Astronomers have discovered exoplanet class supertall, which is only six light-years from our planet. It has a mass of at least 3.2 times our Earth and orbits its star every 233 days at a distance where water would be frozen, known as the "snow line".

Its mass exceeds the earth approximately 3.2-fold; the temperature at the surface Barnard" s Star b - approx -170 degrees Celsius: "it makes the planet not a very good candidate to search for extraterrestrial life.

What's going on: Scientists have discovered a new planet - called Super Earth - that is much bigger and colder than our world but has some of the same characteristics as our planet, according to a new study published Wednesday.

The super Earth lies outside the habitable zone, positioned too far from its sun to host liquid water. Data subtle changes - using of existing scientific instruments can be registered with great accuracy.

"After a very careful analysis, we are over 99 per cent confident that the planet is there, since this is the model that best fits our observations", said Dr Ignasi Ribas, from Institut d'Estudis Espacials de Catalunya and the Institute of Space Sciences in Spain. After 20 years, a team of astronomers have presented definitive evidence that an exoplanet orbits Barnard's star. That designation is held by the roughly Earth-size world Proxima b, which orbits Proxima Centauri, one of the Alpha Centauri trio.

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This planet is revolving round a dwarf star that the scientists named Barnard which is also known as a "Red Dwarf" and is one of the nearest to our sun.

"Or it may be what we call a mini-Neptune, like a scaled-down version of the gas giants of our solar system".

A proximity which leaves the hope to study it soon with the arrival of new instruments of observation more powerful.

"Even more excitingly, the next generation of ground-based instrumentation, also coming into operation in the 2020s, should be able to directly image the reported planet, and measure its light spectrum", Diaz wrote.

"The additional data from CARMENES strongly confirmed the signal, and removed any lingering doubt as to the reality of this planet", Vogt said. Barnard's star is the second closest star system, and the nearest single star to us. "This is the result of a large collaboration organized in the context of the Red Dots project, which is why it has contributions from teams all over the world including semi-professional astronomers coordinated by the American Association of Variable Star Observers".

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