Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.arcetri.astro.it/~palla/ANDREAIMMAGINI/ISM/Hubble5.txt Дата изменения: Thu Mar 28 20:58:09 2002 Дата индексирования: Sat Dec 22 07:57:36 2007 Кодировка: Поисковые слова: arp 220

[Bottom left] - Hubble 5 is a striking example of a "butterfly"
or bipolar (two-lobed) nebula. The heat generated by fast
winds causes each of the lobes to expand, much like a pair
of balloons with internal heaters. This observation was taken
Sept. 9, 1997 by the Hubble telescope's Wide Field and
Planetary Camera 2. Hubble 5 is 2,200 light-years away in
the constellation Sagittarius.

Credits: Bruce Balick (University of Washington),
Vincent Icke (Leiden University, The Netherlands),
Garrelt Mellema (Stockholm University), and NASA