National Radio Astronomy Observatory (NRAO): Summary: Using the both ALMA and the VLT, astronomers have imaged the cold, rock-strewn rings encircling the planet Uranus. Rather than observing the reflected sunlight from these rings, ALMA and the VLT imaged the millimeter and mid-infrared "glow" naturally emitted by the frigidly cold particles of the rings themselves. The rings of Uranus are invisible to all but the largest telescopes -- they weren't even discovered until 1977 -- and they stand ou...
National Radio Astronomy Observatory (NRAO): Summary: Using the both ALMA and the VLT, astronomers have imaged the cold, rock-strewn rings encircling the planet Uranus. Rather than observing the reflected sunlight from these rings, ALMA and the VLT imaged the millimeter and mid-infrared "glow" naturally emitted by the frigidly cold particles of the rings themselves. The rings of Uranus are invisible to all but the largest telescopes -- they weren't even discovered until 1977 -- and they stand ou...
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