News tagged with radio waves

DRAGNs in the sky

A radio galaxy is a galaxy that emits large amounts of radio waves. They were first discovered in the 1950s, but it wasn't until the 1960s when a technique known as aperture synthesis was developed that we could resolve the ...

dateSep 09, 2014 in Astronomy
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Swirling electrons in the whirlpool galaxy

The whirlpool galaxy Messier 51 (M51) is seen from a distance of approximately 30 million light years. This galaxy appears almost face-on and displays a beautiful system of spiral arms.

dateAug 20, 2014 in Astronomy
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