News Astronomy

Gravity at play: A double lens

By Ron Cowen

- More than 2 years ago

From Austin, Texas, at a meeting of the American Astronomical Society

GRAVITY’S RINGS. A rare double Einstein ring is part of the gravitational lens system SDSSJ0946+1006. Two concentric partial ring-like structures are revealed after subtracting the glare from the central, foreground galaxy. R. Gavazzi, Treu, NASA, ESA, and the SLACS team

Astronomers have for the first time spied an extremely rare, double cosmic mirage.