NSF/NRAO/VLA/Cambridge/D.Green et al. |

Born in 1870
The most recent supernova in our galaxy has been discovered by determining the age of the supernova remnant known as G1.9+0.3. To arrive at the age, astronomers tracked how quickly it is expanding, by comparing a radio image from 1985 to a Chandra image taken in 2007 (shown here).

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