Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.astro.louisville.edu/shared_skies/archive/select/messier/m1/20081102/x-ray_optical.txt Дата изменения: Sat Nov 1 01:18:35 2008 Дата индексирования: Sun Feb 3 16:17:15 2013 Кодировка: Поисковые слова: enceladus

http://hubblesite.org/newscenter/archive/releases/2002/24/image/a/

A composite image of the Crab Nebula showing the X-ray (blue), and optical (red)
images superimposed. The size of the X-ray image is smaller because the higher
energy X-ray emitting electrons radiate away their energy more quickly than the
lower energy optically emitting electrons as they move.