Supernova 1987A before and after explosion - Supernova 1987A before and after the explosion -...

Supernova 1987A before and after explosion - Supernova 1987A before and after the explosion - Images of the Supernova 1987A, on the left, obtained on March 8, 1987, and of the same photograph field on the right on February 5, 1984. Images obtained with Siding Spring's 3.9m telescope. Supernova 1987A appeared in the constellation Doradus on February 23, 1987. Sometime during 23 February 1987 a supernova exploded in the Large Magellanic Cloud (LMC), a nearby galaxy. However, the LMC is about 170,000 light years distant, so the supernova exploded 170,000 years ago. It was discovered the following day and brightened rapidly to become the first supernova to be easily visible to the unaided eye for almost 400 years. This photograph shows the field around the site of the supernova in great detail, both before the supernova exploded (right) and about 10 days afterwards, when it was still brightening