Amazing telescopes produce hot space images

Ground-based telescopes continue to produce some of world's important space discoveries

The National Science Foundation's giant Robert C. Byrd Green Bank Telescope now can help astronomers map large cosmic structures. The new tool promises to provide valuable clues about the nature of the mysterious "dark energy" believed to constitute nearly three-fourths of the mass and energy of the universe. Researchers from the Academia Sinica in Taiwan and the University of Toronto developed a technique known as intensity mapping to show how large-scale space structures have changed over the last few billion years, giving insight into which theory of dark energy is the most accurate.

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