Nebula are giant clouds of interstellar gas that play a key role in the life-cycle of stars.
The visible light emitted by stars forming in and around a nebula can be blocked by the dense cosmic clouds of gas and dust that make up a nebula. Therefore, scientists must look to other wavelengths of light that are emitted from the nebula, such as infrared radiation.
Infrared cameras onboard the JWST have relieved some of the most detailed images of nebulae, such as the Southern Ring planetary nebula. The Southern Ring nebula — also known as NGC 3132 — is around 2,500 light-years away from Earth and home to a dying star at its core. Using its Near-Infrared Camera and the Mid-Infrared Instrument , the JWST has captured one of the most detailed images of the nebula. In the two images above, JWST has captured layers of gas and dust within the Southern Ring Nebula. Each layer has been created by the expulsion of cosmic matter from the central dying star.
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