alb3792170

Blue Nebula Surrounding Star WR 31a

At the center of this Hubble Space Telescope image is a Wolf-Rayet star known as WR 31a, located about 30 000 light-years away in the constellation of Carina (The Keel). The blue bubble appearing to encircle WR 31a is a Wolf-Rayet nebula--an interstellar cloud of dust, hydrogen, helium and other gases. Created when stellar winds interact with the outer layers of hydrogen ejected by WolfÂRayet stars, these nebulae are frequently ring-shaped or spherical. The bubble is expanding at a rate of around 220,000 kilometers per hour. WR 31a will eventually end its life as a spectacular supernova, and the stellar material expelled from its explosion will later nourish a new generation of stars and planets.

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Titre: Blue Nebula Surrounding Star WR 31a

Légende: Voir la traduction automatique
At the center of this Hubble Space Telescope image is a Wolf-Rayet star known as WR 31a, located about 30 000 light-years away in the constellation of Carina (The Keel). The blue bubble appearing to encircle WR 31a is a Wolf-Rayet nebula--an interstellar cloud of dust, hydrogen, helium and other gases. Created when stellar winds interact with the outer layers of hydrogen ejected by WolfÂRayet stars, these nebulae are frequently ring-shaped or spherical. The bubble is expanding at a rate of around 220,000 kilometers per hour. WR 31a will eventually end its life as a spectacular supernova, and the stellar material expelled from its explosion will later nourish a new generation of stars and planets.

Crédit: Album / Science Source / ESA/Hubble & NASA

Autorisations: ? Autorisation de modèle: Non - ? Autorisation de propriété: Non
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Taille de l'image: 4354 × 4200 px | 52.3 MB

Taille d'impression: 36.9 × 35.6 cm | 1714.2 × 1653.5 in (300 dpi)

Mots clés: ASTRONOMIE • ASTROPHYSIQUE • BLEU • COSMOLOGIE • COSMOS • GRAVITATION • NÉBULEUSE • PESANTEUR • SCIENCE: ASTRONOMIE • VAGUE