Thor's Helmet is a cosmic bubble of gas blown from a bright, massive central star. The gorgeous bubble in space is a relaxing treat for your eyes before diving back into the work week.
Thor's Helmet Nebula. Image credit: ESO/B. Bailleul
Thor's Helmet Nebula is known by the far more dull moniker NGC 2359 to astronomers who aren't cloudwatching in space. The nebula is in Canis Major, about 15,000 light-years from Earth and 30 light-years across.