DescriptionHubble Captures Re-energized Planetary Nebula - Flickr - NASA Goddard Photo and Video.jpg
Stellar life and death unfold in this “born again” star! 💫
After exhausting the nuclear fuel in their cores, stars with a mass of around 0.8 to eight times the mass of our Sun collapse to form dense and hot white dwarf stars.
As this process occurs, the dying star will throw off its outer layers of material, forming an elaborate cloud of gas and dust known as a planetary nebula.
This phenomenon is not uncommon, and planetary nebulae are a popular focus for astrophotographers because of their often beautiful and complex shapes. However, a few like the one pictured here (Abell 78) are the result of a so-called “born again” star.
Although the core of the star has stopped burning hydrogen and helium, a thermonuclear runaway at its surface ejects material at high speeds.
This ejecta shocks and sweeps up the material of the old nebula, producing the filaments and irregular shell around the central star seen in this image, which features data from NASA's Hubble Space Telescope.
Image credit: ESA/Hubble & NASA, M. Guerrero; Acknowledgment: Judy Schmidt
de partager – de copier, distribuer et transmettre cette œuvre
d’adapter – de modifier cette œuvre
Sous les conditions suivantes :
paternité – Vous devez donner les informations appropriées concernant l'auteur, fournir un lien vers la licence et indiquer si des modifications ont été faites. Vous pouvez faire cela par tout moyen raisonnable, mais en aucune façon suggérant que l’auteur vous soutient ou approuve l’utilisation que vous en faites.
https://creativecommons.org/licenses/by/2.0CC BY 2.0 Creative Commons Attribution 2.0 truetrue
Ce fichier contient des informations supplémentaires, probablement ajoutées par l'appareil photo numérique ou le numériseur utilisé pour le créer.
Si le fichier a été modifié depuis son état original, certains détails peuvent ne pas refléter entièrement l'image modifiée.
Logiciel utilisé
Adobe Photoshop 22.0 (Windows)
Date de modification du fichier
29 décembre 2020 à 15:23
Date et heure de la numérisation
10 décembre 2020 à 17:03
Date de la dernière modification des métadonnées
29 décembre 2020 à 16:23
Source
ESA/Hubble
Crédit ou fournisseur
ESA/Hubble & NASA, M. GuerreroAcknowledgement: Judy Schmidt
Identifiant unique du document original
xmp.did:e2d31d82-5c96-bd49-8589-5ed5ad54dbdc
Titre court
A Flash of Life
Titre de l’image
Located around 5000 light-years away in the constellation of Cygnus (The Swan), Abell 78 is an unusual type of planetary nebula. After exhausting the nuclear fuel in their cores, stars with a mass of around 0.8 to 8 times the mass of our Sun collapse to form dense and hot white dwarf stars. As this process occurs, the dying star will throw off its outer layers of material, forming an elaborate cloud of gas and dust known as a planetary nebula. This phenomenon is not uncommon, and planetary nebulae are a popular focus for astrophotographers because of their often beautiful and complex shapes. However, a few like Abell 78 are the result of a so-called “born again” star. Although the core of the star has stopped burning hydrogen and helium, a thermonuclear runaway at its surface ejects material at high speeds. This ejecta shocks and sweeps up the material of the old nebula, producing the filaments and irregular shell around the central star seen in this Picture of the Week, which features data from Hubble’s Wide Field Camera 3 and PANSTARSS.