Messier 42 better known as the Orion Nebula, with the unaided eye from a dark sky site. This stellar relic, first spied by William Herschel in 1787, is nicknamed the Eskimo Nebula (NGC 2392) because, ...

But then comes the really clever bit. Sophisticated computer software pieces the images together, adjusts for the beating of the heart and then builds an unprecedented 3D image of the heart.