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Unexpectedly confirmed cause of darkening of Gemini star

BingMag.com <b>Unexpectedly</b> <b>confirmed</b> <b>cause</b> of <b>darkening</b> of <b>Gemini</b> star

Japanese scientists have used an unexpected method to confirm the secret of the sudden darkening of Aquarius, one of the brightest stars in the night sky.

It was in 2020 that the universe caught the eye of giant stars 700 light-years away, known as the Betelgeuse. This huge monster star suddenly became dimmer and 10 times darker than usual. Some believed that the incident signaled an explosion and the death of a star, but only a few months later it became clear that the rumors about the death of the star were very exaggerated.

Several teams tried to explain what caused This blur has grown. Meanwhile, a team analyzed hundreds of images of the star to try to uncover stellar dust that may be hiding the star's light from Earth.

It probably emitted gas that cooled and blocked the starlight. Another group suggested that the star may have cooled slightly, and that this change may have reduced the brightness, or at least helped to form a dust cloud.

  • A stellar burp has been the cause of the strange dimming of the abutment

This puzzle may have been solved, but now there is another unexpected discovery of this great dim light. In a new study published Monday in the journal Nature, three astronomers described their astonishing discovery. See Himawari-8. Unparalleled findings that not only confirm some of the previous work in discovering the source of the great darkness, but also show a new way of exploring our cosmic neighborhood. It is one of the Himavari satellites operated by the Japan Meteorological Agency. The satellite operates in static Earth orbit at a distance of 35,785 km above the equator, which is more than 90 times farther from the International Space Station.

BingMag.com <b>Unexpectedly</b> <b>confirmed</b> <b>cause</b> of <b>darkening</b> of <b>Gemini</b> star

Graphic design of Himavari satellite -8
Credit: JMA

From this position, every 10 satellites It captures light and infrared images from all over the earth every minute, mainly used to help forecast the weather across Asia and the western Pacific. For example, he took many pictures of the eruption of Tonga volcano on January 15. But now three Japanese researchers have been looking for light from the constellation Gemini by looking at images captured by the satellite in 2017, and have finally been able to find it.

By studying this light, the researchers came to a similar conclusion. Previously found: Gemini is dim due to dust as well as some of its own natural changes. This is not all the exciting part of the story, but it is a good confirmation that we are on the right track, and this is exactly in line with the scientific process. To offer. This could be good news for astronomers. Building and launching new space telescopes is not cheap or easy, and a rocket must be reserved to send it. But there are now many satellites orbiting the Earth that may be able to do the same thing. Provide data for screening. According to Simon Campbell, an astronomer at Monash University in Australia, Himalayas are like a free space telescope! Determine that it allows them to control the focus of the telescope.

For example, when Gemini mysteriously dimmed, some of the most powerful telescopes on Earth were already booked to observe other areas of the sky. . In one case, the "Very Large Telescope" (VLT) in Chile gave a research team the opportunity to use the telescope to immediately observe the star and to carry out other projects later, but such a process is not always possible.

So next time the stars show signs of the formation of a Displays a supernova, humans may be directly watching the same part of the sky. It had darkened Gemini.
Credit: ESO, ESA/Hubble, M. Kornmesser


Source: CNet

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