Explanation: Which star created this bubble? It wasn't the bright star on the bubble's right. And it also wasn't a giant space dolphin. It was the star in the blue nebula's center, a famously energetic Wolf-Rayet star. Wolf-Rayet stars in general have over 20 times the mass of our Sun and expel fast particle winds that can create iconic looking nebulas. In this case, the resulting star bubble spans over 60 light years, is about 70,000 years old, and happens to look like the head of a dolphin. Named Sh2-308 and dubbed the Dolphin-Head Nebula, the gas ball lies about 5,000 light years away and covers as much sky as the full moon -- although it is much dimmer. The nearby red-tinged clouds on the left of the featured image may owe their glow and shape to energetic light emitted from the same Wolf-Rayet star.

<<  Mart  >> 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: tumannost' - zvezdy Vol'fa-Raie - zvezdnyi veter - Wolf-Rayet star Publikacii so slovami: tumannost' - zvezdy Vol'fa-Raie - zvezdnyi veter - Wolf-Rayet star
Sm. takzhe: Sharpless 308: tumannost' Golova Del'fina Kol'cevaya tumannost' vokrug WR 134 Shlem Tora Zvezdy, pyl' i tumannost' v NGC 6559 Kol'cevaya tumannost' WR 134 Zvezda Vol'fa-Raie WR 124 Sformirovannaya zvezdnym vetrom tumannost' RCW 58 Vse publikacii na tu zhe temu >>