This combined graphic shows a high-resolution image (inset) from the Green Bank Telescope of recently discovered hydrogen clouds between the Andromeda Galaxy M31 (upper right) and Triangulum Galaxy ... more 
This combined graphic shows a high-resolution image (inset) from the Green Bank Telescope of recently discovered hydrogen clouds between the Andromeda Galaxy M31 (upper right) and Triangulum Galaxy M33 (bottom left). Image released May 8, 2013. less 
1 / 13
SPACE.com | Photo By Bill Saxton, NRAO/AUI/NSF
Wed, May 8, 2013 1:24 PM EDT