The Icy Blue Wings of Hen 2-437
NASA’s Hubble Telescope snapped an incredible image of Hen 2-437’s symmetrical icy blue wings. Hen 2-437 is a Planetary nebula in the constellation Vulpecula. It was first discovered by Rudolph Minkowski in 1946.
Hen 2-437 formed when an aging low-mass star reaches the final stages of life. The star swells to become a red giant, before casting off its gaseous outer layers into space. The star itself then slowly shrinks to form a white dwarf, while the expelled gas is slowly compressed and pushed outwards by stellar winds.