[ad_1]
The astronomisti have sought Solar sisters, born in the same cloud of dust and gas as our star.
It is so similar to the Sun that scientists say it is not only her sister, but her twin.
An international team & # 39; astronomisti discovered stars that looks like a carbon copy of & # 39; Our.
It has the same temperature and brightness, 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 birthplace 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.
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 solar mother has planet and the planet is rocky, located in the habitable zone, and finally, if that planet was contaminated by life seeds in the World, then we have x & # 39; can & # 39; have a dream: Earth 2.0, 2.0 orbiting Sun ".
Now you & # 39; receive notifications from BBC News World Download the new version of our app and attivajthom not to exceed our best content.
You already know our YouTube channel? Subscribe!
[ad_2]
Source link
