Dark Influence

Most of the universe's matter is out of sight, but not out of mind

12:58pm, April 18, 2005

Imagine trying to figure out what's happening in a film from just a few scattered frames near the end. Now, let's make it even more challenging: The star of the movie is invisible as you watch the rest of the characters going about their business. That's what astronomers are up against in their quest to understand the cosmos.

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