M1, the Crab Nebula, is the remnant of a stellar explosion that was seen in the year 1054 AD. The colors in the image were assigned to distinguish various chemical elements, which are now all racing into space to enrich new generations of stars.
Some Hubble images use data acquired over several days of observations.
In today’s image, we see the Crab Nebula, a supernova remnant left behind from the explosion of a massive star which was observed on Earth.