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Symmetry: Mirror, Mirror

After more than six years of grinding and polishing, the first-ever dual-surface mirror for a major telescope is complete.

World’s Most Powerful Camera Receives Funding Approval

Plans to build the world’s largest digital camera at SLAC have reached a major milestone, with funding approval for the 3,200-megapixel camera. The camera will be the centerpiece of the Large Synoptic Survey Telescope (LSST), which will provide unprecedented details of the universe and help address some of its biggest mysteries.

Symmetry: Cosmic Inflation

Cosmic inflation refers to a period of rapid, accelerated expansion that scientists think took place about 14 billion years ago.

Symmetry: How to Weigh a Galaxy Cluster

Step on a scale and you’ll get a quick measure of your weight. Weighing galaxy clusters, groups of hundreds or thousands of galaxies bound together by gravity, isn’t so easy. But scientists have many ways to do it.

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