In the news this morning ... views of a Supernova in 3D !
http://www.physorg.com/news200127668.html
Some really cool technologies allowing localised ejecta velocities to be measured and converted into distance:
"Integral field spectroscopy is a special technique where for each pixel we get information about the nature and velocity of the gas,” says Kjær. “This means that besides the normal picture we also have the velocity along the line of sight. Because we know the time that has passed since the explosion, and because the material is moving outwards freely, we can convert this velocity into a distance. This gives us a picture of the inner ejecta as seen straight on and from the side.”
Great stuff !!
(Back to my textbooks - thanks Carl.
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