The stylish blue sphere existing far away in Space was captured by NASA's Hubble space telescope. The Bubble Nebula is located 7,100 light-years from Earth and is 45 times more massive than our Sun.
A Wolf-Rayet bubble: The Crescent Nebula is the stellar wind bubble blown by a Wolf-Rayet star in the constellation ... frozen carbon dioxide that falls out of the atmosphere as snow. Carbon dioxide ...