Earth with city lights (artist's impression)

The stars and galaxies we see in the night sky represent only one sixth of the total matter in the Universe. The remainder is a mysterious component - dark matter - that neither emits nor reflects light. So, for astronomers, the challenge of mapping the Universe has been similar to mapping a continent from just the lights of the cities.


ESA/Hubble (M. Kornmesser & L. L. Christensen)

About the Video

Release date:7 January 2007, 19:30
Related releases:heic0701
Duration:27 s
Frame rate:30 fps

About the Object


r.titleLarge QT
5.6 MB


r.titleVideo Podcast
4.2 MB
r.titleMedium MPEG-1
10.7 MB
r.titleMedium Flash
4.4 MB


r.titleSmall Flash
2.1 MB
r.titleSmall QT
1.4 MB

For Broadcasters

r.titleBroadcast SD
92.9 MB

Also see our

Privacy policy Accelerated by CDN77