Explanation: No supernova has ever been predicted. These dramatic stellar explosions that destroy stars and disperse elements that compose people and planets are not so well understood that astronomers can accurately predict when a star will explode - yet. Perhaps Sher 25 will be the first. Sher 25, designated by the arrow, is a blue supergiant star located just outside the star cluster and emission nebula NGC 3603. Sher 25 lies in the center of an hourglass shaped nebula much like the one that surrounds the last bright supernova visible from Earth: SN1987a. Now the hourglass shaped rings around SN1987a were emitted before that blue supergiant exploded. Maybe Sher 25 has expelled these bipolar rings in a step that closely precedes a supernova. If so, Sher 25 may be within a few thousand years of its spectacular finale.

<<  Oktyabr'  >> Pn Vt Sr Cht Pt Sb Vs 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31         1995   1996   1997 1998   1999   2000 2001   2002   2003 2004   2005   2006 2007   2008   2009 2010   2011   2012 2013   2014   2015 2016   2017   2018 2019   2020   2021 2022   2023   2024

Yanvar' Fevral' Mart Aprel' Mai Iyun' Iyul' Avgust Sentyabr' Oktyabr' Noyabr' Dekabr'

Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.

Publikacii s klyuchevymi slovami: Sverhnovye - sverhgigant - supernova - Sher 25 - NGC 3603 - supergiant Publikacii so slovami: Sverhnovye - sverhgigant - supernova - Sher 25 - NGC 3603 - supergiant
Sm. takzhe: μ Cefeya NGC 1097: spiral'naya galaktika so sverhnovoi Obrechennaya zvezda η Kilya Sverhnovaya otkryta v blizkoi spiral'noi galaktike M101 Sverhnovaya vystrelivaet pul'sar J0002 SN Rekviem: sverhnovaya, kotoruyu uvideli tri raza NGC 7814: Malen'koe Sombrero so sverhnovoi Vse publikacii na tu zhe temu >>