The beautiful Prawn Nebula has been hiding in the wrong wavelengths

This nebula measures a whopping 250 light-years across, and it's close enough to Earth that its relative size in the sky is equivalent to that of four full Moons. But it's so faint in the wavelengths our eyes can actually see that it's generally been ignored until now. As this gorgeous new image from the European… » 9/22/13 5:00pm 9/22/13 5:00pm