Sunday , May 9 2021

Serpentists have found the "big sister" of the Earth near the nearest star



11/14/2018

(after updating: )

1118

MOSCOW, November 14 – Ratio Novosti. The relatively small "Super-Earth" European astronomers discovered outweigh the Barnard star, the nearest single mouse to us. His first description and images were presented in Nature magazine.

So the artist imagined the asteroid belt in Proxima Centauri
Asteroid belt servers discovered at the nearest star

"Barnard star has a rather bad name among servers – in the past, many people have repeatedly talked about finding the next planets, and all these statements have been rejected. We hope that this will not be cheats us, "said Gilhem Anglada Eskuda (Guillem Anglada-Escude) from the University of Queen Mary in London.

Point in the air

Two years ago, Anglada Escuda wrote his colleagues an incredible discovery – he managed to find a small planet of Earth near Proxima Centauri, a red red of the Alpha Centauri triple system and a # 39; r nearest star.

Initially, scientists thought that Proxima b is the nearest rock planet, which is most like Earth in all its features. Today, many planetarians believe that life is impossible because of the incredible nature of the red red, on the face of which there are flags that can constantly "break" the atmosphere of the planet.

So the artist presented the surface of the planet in Proxima Centauri.
Serpenters began a huge search for the "twins" of the Earth in nearby stars

After making this discovery, Anglo-Eskude asked if similar planets and other stars were closer to us, most of them being a red soul – Barnard stars, only six years light away from Earth, and Ross 154 , which is located in almost ten years light. or solar system.

To search for these planets, the scientists of the Pale Red Dot project, thus named by correspondence with a photo of the Earth, created by the Voyager-1 cursor in 1990 created a distance of 6 billion kilometer of Planed, the great serpentist, Karl Sagan, won the "dot no glas" in one of the public lectures.

Planet Proxima Centauri b, possible twin of Earth
Scientists have discovered the "twin" of the Earth near our nearest star, Proxima Centauri

As part of this project, Anglada Escuda watched these star colleagues for 90 days using the HARPS tool set on a 3.6 meter telescope at La Silla Chile observatory.

This device, as explained by planetologists, holds the smallest "penetration" in the position of stars in the air, resulting from gravitational interaction with planets. This helps even find in those cases if the exomirs do not pass through the stars' disk and do not cause them to temporarily fade.

The oldest sister of the Earth

He noted the bet on a similar way, as Anglada Eskude stated at a press conference, almost immediately giving the result to him. After analyzing the last 20 years archives of Barnard star observations prepared by Pale Red Dot participants, as well as studying with the help of HARPS and other equipment over the last two years, scientists have found "99% tips" on the existence Planed at this star.

This planet, as the scientists point out, is in a distance recording of the star for red birds. He makes one revolution of his / her room in 233 days and is about the same distance from Venice from the Sun. In its entirety, according to current estimates of researchers, about 3.5 times more than Earth ground, which can be listed among the relatively small "Super-Earths".

Solar system and adjacent stars

Despite the smaller distance to the star, this planet receives about 50 times less light and heat than the Earth due to the small size and Barnard star tense. For this reason, life on its face can not be scarce – typical surface temperatures are not more than less than 170 degrees Celsius.

If it has a thick atmosphere that contains many greenhouse gases then it will be like Mars in terms of the climate, which leaves a little chance to live on its face. Scientists will be able to have an exact answer to this question only when they find out if they have an atmosphere and what it's about.

Proxima Centauri's huge wind is likely to destroy the planet's atmosphere
Life in the shadow of red dwarf: what to expect from the nearest exoplanets

It will happen very soon – there is a short distance to star Bernard, as well as a boring character, making her planetary essays a major candidate for accepting the first detailed images of world outside & # 39; r solar system.

Scientists hope the first photos will be available from the GAIA mission already launched, as well as the WFIRST and James Webb telescope, that NASA will launch its space early in the next decade.


Source link