James Webb Reveals Incredible Details of Supernova Remnant Cassiopeia A

The James Webb Space Telescope again has provided an image that scientists from all over the world will painstakingly study for a long time. We are talking about a detailed image of the young supernova remnant Cassiopeia A (Cas A) in the Milky Way.

This frame allows us to examine the complex internal structure of the nebula, which contains filaments, knots, and a shell of stellar matter.

One of the most striking details is the greenish-brown glowing loop to the right of the center of a supernova, which at the moment causes bewilderment among researchers, but does not deprive them of inspiration. “We called her the Green Monster,” said Milisavlevich.

The scientists explained that when a star runs out of fuel, it collapses under its own gravitational force and causes a bright explosion known as a supernova. Such is the case with Cas A, which, from the Earth's point of view, exploded 340 years ago. This relatively recent cosmic event makes it the youngest known supernova remnant visible from Earth.

Cassiopeia A is located approximately 11,000 light-years from our planet and lies in the constellation Cassiopeia. Its dimensions are about 10 light-years across.

A deeper understanding of what happened to Cas A could greatly improve our understanding of stellar processes, even those that led to the formation of the Earth itself, the researchers concluded.