Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.astronet.ru/db/xware/msg/apod/1996-09-25
Дата изменения: Sun Oct 5 17:05:56 2003
Дата индексирования: Sat Apr 26 04:53:03 2008
Кодировка:
Bright Stars and Dark Clouds
Astronomy Picture of the Day
    


Bright Stars and Dark Clouds
<< Yesterday 25.09.1996 Tomorrow >>
Bright Stars and Dark Clouds
Credit:
Anglo-Australian Telescope photograph by David Malin
Copyright: Anglo-Australian Telescope Board
Explanation: Did you ever feel like a black cloud was following you around? Well don't feel bad - this even happened to the bright young stars of the open cluster NGC 6520. On the left are the cluster's bright blue stars. They formed only millions of years ago - much more recently than our ancient Sun which formed billions of years ago. On the right is an absorption nebula from which the stars might have formed. This nebula contains much opaque dust which blocks visible light from the many stars that would have been seen in the background. The study of open clusters is valuable for many reasons which include the understanding star formation and the calibration of the distance scale of our universe.

Information: Thursday, September 26 - A Total Lunar Eclipse
Tomorrow's picture: A Total Lunar Eclipse

January
February
March
April
May
June
July
August
September
October
November
December
 < September 1996  >
Mo Tu We Th Fr Sa Su






1
2345678
9101112131415
16171819202122
23242526272829
30





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.

Based on Astronomy Picture Of the Day

Publications with keywords: clouds - stars
Publications with words: clouds - stars
See also:
All publications on this topic >>