Thursday , June 8 2023

Astronomers have discovered a "super lamp" running around a solar neighbor


This discovery can help you get new information about a planet near solar star systems.

Astronomers who studied the star of Barnard, who was just six light years ago, noticed a "frozen, enlightened world" – an outpost of at least 3.2 times mass Earth.

The planet, called Barnard's Star B, revolves around its light for 233 days.

The star of Barnard is the second near Sun – under the trench of the Centaur Alpha system, which is 4.39 light years away.

"It is important because it is our close neighbor and we would like to know our neighbors in principle," said Ignazi Ribas, a scientist at the Catalonia Institute of Space Studies and the Spanish Institute of Space Sciences, AFP.

Although the planet's orbit is relatively close to its stars, its energy is less than 2%. the energy flow that reaches Earth from the Sun. According to the researchers' calculations, the surface temperature is minus 170 degrees Celsius, which means that the life of a known form could not exist there.

"This is clearly not a living room, there is no liquid water, and if it contains water or gas, it is probably in a rigid form – so we call it (on the planet) frozen," Ribasa explained.

The dark red dwarf

For many years, human beings exploring the celestial bodies in the night sky have always focused on brighter and more recent stars, which release more light and increase the ability of scientists to observe the bodies that surround them.

Bernardo's star is a red dwarf, a small, super-starred star, more than twice the sun. It emits relatively little light, so it's hard to see the bodies running around it.

J. Ribas and his colleagues searched Bernardo Star B for more than 20 years of observation material from seven different observation devices.

Then using the so-called Doppler method, they determine the effect of the planet's pulling power on the parent star.

Astronomers can determine the speed and mass of the planet by this method.

"We were all working hard until this revolution was successful," said Guillemas Anglada Escude, an astronomer at Queen Mary University in London, one of the authors of the study published in Nature.

The artist portrays the sunset in the stars of the planet Barnard

The artist portrays the sunset in the stars of the planet Barnard

© Reuters

"Mini Poseidon?"

The team of scientists collaborated with the European Southern Observatory (ESO). Tests used devices that could detect changes in star speed, even if it was only 3.5 kilometers per hour.

It is believed that Bernardo's star runs at a speed of about 500 kilometers per hour and is perhaps the most famous moving sky in our universe.

According to I. Ribas, although astronomers, using the Doppler method, have been able to determine the size and orbit of the star, so far all attempts to find out what it looks like will be "speculation."

"We have seen that the planets of such a mass are rocky, which means that they may be similar to Earth, have a hard surface and perhaps some atmosphere or some kind of frozen layer on the surface, "he said.

"Or it may be similar to the mini Neptune, a reduced version of our solar giants," the scientist added.

Although it may be cold, unhealthy, almost invisible, but it is very close.

The only known Earth's exoplanet was discovered in 2016. It runs around a star in the star system of Alpha Kentaurus, from our distant distance of 4.37 light years away.

"There are not so many stars in our immediate neighborhood, investing in their search is costly," said I. Rivasas.

"It's really very close, so if you have the hope – and we must – look at this planet in the long run and explore it in more detail, we have to start with the closest ones." It could eventually lead to other discoveries, "he said.

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