In the latest photos released by NASA, the Stingray Nebula has changed dramatically in just 20 years, and the light of the cloud gas quickly dissipated. (Extracted from NASA)
[Real-time news/comprehensive report]For cosmic stars whose life spans are counted at hundreds of millions of years, human life is like a drop in the ocean. It is difficult for mortals to observe slight changes in celestial bodies in their entire life. However, the latest release by NASA In the photo, the Stingray Nebula has undergone tremendous changes in just 20 years, and the cloud gas light quickly dissipated. Astronomers said, “It is extremely rare to witness such rapid nebula changes.”
NASA recently released photos captured by the Hubble Space Telescope in 1996 and 2016. The protagonist is the Stingray Nebula (Hen-1357) in the southern constellation Temple of Heaven 18,000 light years away. ), it can be seen from the picture that in the photo taken in 1996, the dying star in the center of the Stingray Nebula spewed a lot of bright gas, making it appear beautiful cloud light, but in 2016, just 20 years later, the Stingray Nebula was visible The “size” is much smaller, and the brilliance is much bleak.
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Researchers found that the dying star in the center of the Stingray Nebula ejected a large amount of nitrogen, hydrogen and oxygen, emitting bright light during the period, but in the 20 years from 1996 to 2016, the brightness of the emitted oxygen has dropped by nearly 1,000 times, and the difference is obvious. .
Martina Guerrero, an astronomer at the Andalusian Observatory in Spain, said that this change is quite striking and very strange. He said that humans have observed obvious changes in nebulae in just a few years. The level of clarity has never been seen before.
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