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Alpha Centauri can be the home of mini-Earths



The closest neighbor to our solar system could host small, rocky planets like Earth, according to a new study.

A new analysis of the nearby Alpha Centauri system has revealed that there may not be as many larger planets in orbit around the planet. two main stars as previously thought, instead, small planets similar to Earth are probably the most common type.

According to the researchers, the new understanding could help reduce the search for habitable worlds only 4.4 light-years away. 19659002] Scroll down to watch the video

  The closest neighbor in our solar system could host small, rocky planets very similar to Earth, according to a new study. The new understanding could help reduce the search for habitable worlds only 4.4 light-years away. The impression of an artist is represented

  The closest neighbor of our solar system could harbor small and rocky planets very similar to the Earth, according to a new study. The new understanding could help reduce the search for habitable worlds only 4.4 light-years away. The impression of an artist is represented

The closest neighbor of our solar system could harbor small and rocky planets very similar to the Earth, according to a new study. The new understanding could help reduce the search for habitable worlds only 4.4 light-years away. The impression of an artist is represented

WHAT THEY FOUND

According to the researchers, the small and rocky planets would not have been detected in the spectrographic analysis.

This means that there could be planets smaller than 50 Earth masses that were overlooked, orbiting Alpha Centauri A.

And, there could be planets orbiting smaller than 8 land masses orbiting around Alpha Centauri B.

] Around Proxima Centauri, there may be planets in orbit that are less than half the mass of the Earth.

A new study led by a team of Yale astronomers rules out the existence of a series of larger planets in the system.

While these larger planets were previously predicted in other models, the data from more advanced spectrographic instruments suggest that a different scenario may be at play.

& # 39; The universe has told us that the most common types of planets are small planets, and our study shows that these are exactly the ones that are most likely to be orbiting Alpha Centauri A and B, "said lead researcher of the exoplanet, Professor Debra Fischer.

Alpha Centauri is only 24.9 billion miles away, or 4.4 billion light years, and is the solar system closest to ours.

It is home to three stars : Centauri A, Centauri B and Proxima Centauri.

And, just last year, scientists revealed that they had seen an Earth-like planet surrounding Proxima Centauri.

& # 39; Because Alpha Centauri is so close, it's our first stop outside our solar system, "Fischer said.

"It is almost certain that there are small, rocky planets around Alpha Centauri A and B."

In the new study, the team analyzed data from a new wave of instruments in Chile, including the CHIRON spectrograph, which It was built by the team of Fischer, HARPS and UVES, part of the Very Large Telescope Array.

& # 39; The precision of our instruments has not been good enough, so far & # 39; said Fischer. .

  Alpha Centauri is only 24.9 billion miles, or about 4.4 b Illion light years, and is the solar system closest to ours. It is home to three stars: Centauri A, Centauri B and Proxima Centauri. It represents the impression of an artist

  Alpha Centauri is only 24.9 billion miles, or about 4.4 billion light years, and is the solar system closest to ours. It is home to three stars: Centauri A, Centauri B and Proxima Centauri. The impression of an artist is represented

Alpha Centauri is only 24.9 billion miles, or about 4.4 billion light years, and is the solar system closest to ours. It is home to three stars: Centauri A, Centauri B and Proxima Centauri. The impression of an artist is represented

ALPHA CENTAURI

The Alpha Centauri star system is 25 billion miles (4.37 light years) away.

With the fastest spacecraft today, it would take 30,000 years to get there.

Breakthrough Starshot aims to establish whether a gram-scale nanocraft, in a candle pushed by a beam of light, can fly more than a thousand times faster.

Astronomers estimate that there is a reasonable possibility that there is an Earth-like planet in the "habitable zones" of Alpha Centauri's three-star system.

According to the researchers, the small rocky planets would not have been detected in the spectrographic analysis.

This means that there could be planets smaller than 50 masses of earth that were overlooked, orbiting Alpha Centauri A.

And, there could be planets orbiting smaller than 8 land masses orbiting around Alpha Centauri B. [19659002] Around Proxima Centauri, there may be planets in orbit that have less than half the mass of Earth.

The new study also eliminated the possibility of large, Jupiter-sized planets that could give rise to asteroids and alter the orbits of smaller planets, the researchers say.

& # 39; This is a very green study where you recycle existing data to draw new conclusions & # 39; said first author Lily Zhao.

& # 39; By using the data in a different way, we can discard large planets that could endanger small, livable worlds and narrow the search area for future research. & # 39;


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