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Resumo
PriskriboA Dramatic Demise NGC 5468.jpg
English: Some of the most dramatic events in the Universe occur when certain stars die — and explode catastrophically in the process.
Such explosions, known as supernovae, mainly occur in a couple of ways: either a massive star depletes its fuel at the end of its life, become dynamically unstable and unable to support its bulk, collapses inwards, and then violently explodes; or a white dwarf in an orbiting stellar couple syphons more mass off its companion than it is able to support, igniting runaway nuclear fusion in its core and beginning the supernova process. Both types result in an intensely bright object in the sky that can rival the light of a whole galaxy.
In the last 20 years the galaxy NGC 5468, visible in this image, has hosted a number of observed supernovae of both the aforementioned types: SN 1999cp, SN 2002cr, SN2002ed, SN2005P, and SN2018dfg. Despite being just over 130 million light-years away, the orientation of the galaxy with respect to us makes it easier to spot these new ‘stars’ as they appear; we see NGC 5468 face on, meaning we can see the galaxy’s loose, open spiral pattern in beautiful detail in images such as this one from the NASA/ESA Hubble Space Telescope.
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Titoloj
Donu unulinian priskribon de la enhavo de ĉi tiu dosiero
Ĉi tiu dosiero entenas aldonan informon, probable aldonitan de la diĝita fotilo aŭ skanilo uzita por ĝin krei aŭ diĝitigi. Se la dosiero estas modifita disde sia originala stato, detaloj povas ne ĝuste priskribi tiun modifitan bildon.
Dato kaj tempo de datuma generado
06:00, 2 dec. 2019
Programaro uzata
Adobe Photoshop CC (Windows)
Dato kaj tempo de dosiera ŝanĝo
13:47, 12 jul. 2019
Dato kaj tempo de ciferecigado
22:28, 17 jun. 2019
Dato kiam metadatumoj estis laste modifitaj
15:47, 12 jul. 2019
Unika identigo de originala dokumento
xmp.did:2c175486-619a-df42-ad48-92d20b52ec34
Provizanto
ESA/Hubble & NASA, W. Li et al.
Acknowledgements: Judy Schmidt (Geckzilla)
Fonto
ESA/Hubble
Mallonga titolo
A Dramatic Demise
Titolo de bildo
Some of the most dramatic events in the Universe occur when certain stars die— and explode catastrophically in the process.Such explosions, known as supernovae, mainly occur in a couple of ways: either a massive star depletes its fuel at the end of its life, become dynamically unstable and unable to support its bulk, collapses inwards, and then violently explodes; or a white dwarf in an orbiting stellar couple syphons more mass off its companion than it is able to support, igniting runaway nuclear fusion in its core and beginning the supernova process. Both types result in an intensely bright object in the sky that can rival the light of a whole galaxy.In the last 20 years the galaxy NGC 5468, visible in this image, has hosted a number of observed supernovae of both the aforementioned types: SN 1999cp, SN 2002cr, SN2002ed, SN2005P, and SN2018dfg. Despite being just over 130 million light-years away, the orientation of the galaxy with respect to us makes it easier to spot these new‘stars’ as they appear; we see NGC 5468 face on, meaning we can see the galaxy’s loose, open spiral pattern in beautiful detail in images such as this one from the NASA/ESA Hubble Space Telescope.