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  1. 12 lug 2022 · Planetary nebulae are the shells of gas and dust ejected from dying stars. NASA’s James Webb Space Telescope has revealed details of the Southern Ring planetary nebula that were previously hidden from astronomers.

  2. www.bbc.com › article › 20220901-what-happens-when-a-star-diesWhat happens when a star dies? - BBC

    2 set 2022 · The Southern Ring Nebula is a shell of gas and dust ejected from a dying star (Credit: Nasa/ESA/CSA/STSCI) At the end of their lives, sunlike stars metamorphose into glowing shells of...

  3. 3 ago 2023 · Some 2,600 light-years from Earth, the nebula was born from a dying star that expelled its outer layers into space. The images could provide key insights into the life cycles of stars,...

  4. 31 lug 2015 · A dying star’s final moments are captured in this image from the NASA/ESA Hubble Space Telescope. The death throes of this star may only last mere moments on a cosmological timescale, but this star’s demise is still quite lengthy by our standards, lasting tens of thousands of years!

  5. 12 lug 2022 · Planetary nebulae are the shells of gas and dust ejected from dying stars. Webb’s powerful infrared view brings this nebula’s second star into full view, along with exceptional structures created as the stars shape the gas and dust around them.

  6. 12 lug 2022 · Webb will allow astronomers to dig into many more specifics about planetary nebulae like this one—clouds of gas and dust expelled by dying stars.

  7. 10 dic 2023 · This high-resolution look unveils intricate details of the expanding shell of material slamming into the gas shed by the star before it exploded. Cas A is one of the most well-studied supernova remnants in all of the cosmos.