Shulou(Shulou.com)11/24 Report--

CTOnews.com James Webb Space Telescope (JWST) has captured images of Cassiopeia A supernova remnants using the Infrared Instrument (MIRI). Thanks to this, scientists can conduct "cosmic forensics" to better understand what happens when stars die.

▲ Image sources: NASA, ESA, CSA, DD Milisavljevic (Purdue University), T. Temim (Princeton University), I. De Looze (Ghent University) From our perspective on Earth, this supernova remnant is located in the Milky Way galaxy, formed about 340 years ago, about 11000 light-years from Earth, and is one of the youngest known supernova remnants.

Material ejected by supernovae like these continues to be scattered throughout the galaxy, and they will be the building blocks for the next generation of stars and planets. About 4.6 billion years ago, the same process eventually formed the Sun and many of the planets in our solar system, paving the way for carbon-based life, providing the material basis for elements such as calcium in our bones and iron in our blood.

▲ CTOnews.com Note: Danny Milisavljevic of Purdue University in Indiana, Webb's lead investigator, said in a NASA statement: "Cas A contains our best chance to observe stellar debris, and this 'stellar dissection' can better understand what type of star was before and how this star exploded." "

NASA said that at the top of this image, the outer edge of the bubble of matter emitted by the supernova, you can see an orange and red veil, which represents warm interstellar dust. This is a phenomenon in which the material ejected from the stellar explosion is dispersed into the surrounding gas and dust.

Filaments within the bubble and extending toward the center represent the material of the exploding star. These filaments emit heavy elements such as oxygen, neon and argon, indicating that the star is doomed.

Over millions of years, these elements may gradually diffuse out of Cas A and eventually form a new stellar population.

While scientists already know how supernovae deliver matter and elements to future stars and planets, we don't yet know why early galaxies are so full of cosmic dust, and with JWST research, we may be able to solve this mystery and point the way for the future of humanity.

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