A small sliver of the Cygnus Loop reveals new details about the iconic nebula.
The nebula, called the Cygnus Loop, forms a bubble-like shape that is about 120 light-years in diameter. was first discovered in 1784, but proved to be so spectacular that scientists have continued to gaze into it ever since. , they've managed to glean some intriguing information from the marvel, such as the fact that it looks kind of like a 120-light-year-wide cotton ball with a bright blobby center and glowing cobweb shell.
For one, as Sankrit explains, the team was able to notice density differences in the shock wave associated with the supernova as it propagates through space. As for what a shock wave is, exactly? Well, basically, when a star explodes, not only does it release an enormous amount of material, but that material is also shot out with an immense amount of force.
And that material also tends to take the shape of threads, or filaments. With regard to the Cygnus Loop's filaments, the team says the section they looked at with the time-lapse data holds what are known as gossamer filaments, which resemble"wrinkles in a bedsheet stretched across two
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