Research NewsAstronomy

Einstein's Theory Rings True

Science  10 Apr 1998:
Vol. 280, Issue 5361, pp. 205
DOI: 10.1126/science.280.5361.205

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Summary

In much the same way as a glass lens can focus light, a sufficiently great mass--say a galaxy--can focus the light from a source far beyond it. Reporting in the 1 April Monthly Notices of the Royal Astronomical Society, a team of U.S. and European astronomers has now used three telescopes to pin down an "Einstein ring," the complete circular image formed when source, gravitational lens, and telescope are in perfect alignment.

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