Image: Thor's Helmet nebula in the X-ray spectrum
Monday, April 20, 2015 - 07:20
in Physics & Chemistry
This brightly coloured scene shows a giant cloud of glowing gas and dust known as NGC 2359. This is also dubbed the Thor's Helmet nebula, due to the arching arms of gas stemming from the central bulge and curving towards the top left and right of the frame, creating a shape reminiscent of the Norse god's winged helmet.