🌌 NASA Astronomy Picture of the Day
Bright Stars and Dark Clouds Credit:
Date: 1996-09-25

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
Copyright: Anglo-Australian Telescope Board







Feed
Scan with QR Code Reader
mobi

