April 24, 2021 04:35 GMT
AG Carinae, which belongs to the so-called luminous blue variants, is thought to be about 70 times the mass of the Sun.
To mark the 31st anniversary of its launch, the Hubble Telescope displayed an impressive image of the AG Carinae, One of the brightest stars seen in our galaxy, surrounded by a glowing aura of gas and dust. The famous space observatory was launched on April 24, 1990 in a joint mission between NASA and the European Space Agency, and it has achieved more than 1.5 million observations of about 48,000 celestial bodies so far.
The observed star is a few million years old, about 70 times larger than the sun, and 20,000 light years away. It belongs to a rare class of stars called Luminous blue variants It appears to be surrounded by a massive layer of material, five light-years wide, that the star ejected into space thousands of years ago.
The star remains unstable and to avoid destroying itself, it emits a steady pulse between the pressure of radiation trying to exit and pushing gravity inward. “I love studying these kinds of stars because I am intrigued by its instability. “They are doing something strange,” said Kerstin Weiss, an expert on bright blue variants at the Ruhr University in Bochum, Germany. At NASA.
These stars are in between The most voluminous and brilliant a favour, And it has a relatively short life expectancy. Due to their formidable shapes and extremely high temperatures, stars like AG Carinae are in a constant battle to maintain stability. Many of them are supposed to end their lives in a supernova explosion.
In the image, taken with visible light and ultraviolet rays, the hydrogen and nitrogen gases are shown in red, while the blue color corresponds to the dust clusters illuminated by the reflected light of the star.
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