ALMA Images of Lensed Galaxy SDP.81 Reveal Einstein Ring

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have captured stunning images of a gravitationally lensed galaxy called HATLAS J090311.6+003906 (SDP.81 for short). Discovered in 2010 by the Herschel Space Observatory, SDP.81 is an active star-forming galaxy approximately 12 billion light-years away from Earth. It is being lensed by a massive foreground galaxy that is [...] —> Read More