Monday , October 25 2021

S & # 39; is the discovery of the double solar brother & # 39; 184 light years? BBC News



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It is so similar to the Sun that scientists contend that Not only is her sister, but it's her twin.

An international team & # 39; astronomisti discovered stars that looks like a carbon copy of & # 39; Our.

It has the same temperature and luminosity, Very similar chemical composition and almost the same age, about 4500 million years.

The twinned star, called HD 186 302, is 184 light years & # 39; away and will allow scientists to investigate the place of birth of the sun, which remains & # 39; mystery.

"As m & # 39; there is too much information about the sun past, the study & # 39; these green stars can & # 39; helps us understand where in the galaxy and under what conditions left shaped sun, "said in a statement. Vardan Adibekyan, Astronomer & # 39; the Institute & # 39; the Astrophysics and the Space Sciences Portugal, who led the research.

Cribs of & # 39; Star

Astronomisti have searched for sun brothers, namely, stars are formed in the same cloud of gas and dust the – our.

S & # 39; now, few candidates for solar nuns were identified.

Star cluster Trumpler 14

F & # 39; this group & # 39; & # 39 stars can; there are many sun brothers, but it was very difficult to find.

It is known that thousands of & # 39; & # 39 formed in stars, those cradles or stellar nurseries, but with the passage of time are scattered in the Milk Way so it's very difficult to find them.

Adibekyan and his colleagues used a sophisticated method in their research.

"With the collaboration of & # 39; Patrick de Laverny and Alejandra Recio Blanco, of the European Coastal Observatory, obtained a sample of & # 39; 230,000 project spectrum Ambre (initiative created by the European Southern Observatory and the Costa Azul Observatory) ".

Scientists have also used that data in spectral & # 39; very large sample & # 39; star obtained European satellite Gaia.

"Earth 2.0"

One of the big questions that astronomisti will seek to answer is whether a planet around HD 186 302 can embrace life.

"Some theoretical calculations show that there is a real likelihood that life will Earth may have extended to exoplanetary systems or other planets during the period & # 39; the last intense bombardment, "Adibekyan said.

The bombing was intense period & # 39; about 4000 million years ago when the Solar System bodies were hit by a large asteroids.

The possibility of finding signs of life in & # 39; exoplanet solar twin enthuse Adibekyan.

"If we are lucky and our mother has solar planet and the planet is rocky, located in the habitable zone, and finally, if that planet was contaminated from the seeds of life on Earth, then we have what can & # 39; Dream: 2.0 Earth, orbiting Sun 2.0 ".

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