A before and after image showing the supernova detected on February 23, 1987. On the right is an image of part of the Large Magellanic Cloud with an arrow pointing to star Sanduleak-69 202. On the left is an exposure after the star went supernova. It is so bright that it overexposes the image, making it appear much larger than the surrounding stars.

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1. Robert McNees (mcnees@mastodon.social)'s status on Friday, 23-Feb-2024 15:31:36 UTC Robert McNees

   in reply to

   👆Supernova-versary!

   More recent examples of multi-messenger astronomy have paired electromagnetic and gravitational wave detections to study, for example, the merger of two neutron stars.

   Anyway, share this post if you had this same before-and-after poster of Supernova 1987A on your bedroom wall when you were a kid. Mine came from the Smithsonian Air & Space Museum gift shop.

   Image: David Malin / Australian Astronomical Observatory