Amazing telescopes produce hot space images

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

Astronomers at the California Institute of Technology and Ecole Polytechnique Federale de Lausanne recently said they discovered the first known case of a distant galaxy being magnified by a quasar acting as a gravitational lens. The discovery was based in part on observations done at the W. M. Keck Observatory on Hawaii's Mauna Kea. A single quasar could be a thousand times brighter than an entire galaxy of a hundred billion stars, which makes studies of their host galaxies exceedingly difficult. The significance of the discovery, the researchers say, is that it provides a novel way to understand these host galaxies.

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