About a thousand years ago, Chinese astronomers witnessed a supernova. The remnants of that explosion - delicate filaments of matter and light - have continued to expand (six light years wide), forming what we now call the Crab Nebula.
And the Hubble has captured the best image ever of this amazing cosmic wonder.
Here is the full res version. (3864 x 3864 pixels)
And here is a smaller version for light-weights. (1280 x 1024 pixels)