The supernova remnant G1.9+0.3 was created by the explosion of a star about 28,000 light years away. Debris from the explosion has expanded over time, as seen in a radio image (blue) taken in 1985 and an X-ray image (orange) taken in 2007 (X-ray image: NASA/CXC/NCSU/S Reynolds et al.; radio image: NSF/NRAO/VLA/Cambridge/D Green et al.)
A supernova remnant near the centre of the Milky Way has turned out to be the youngest known in our galaxy, plugging a puzzling gap in the astronomical record.
Known as G1.9+0.3, the remnant lies about 28,000 light years away. It was first…
