The Heart & Soul Nebulae, in the constellation Cassiopeia At least 6,500 lightyears away in the Perseus Arm of our Galaxy, these are emission nebulaewith " glowing ionized hydrogen gas and darker dust lane." - (wikipedia) Reminder: ONE lightyear is nearly SIX trillion miles - that is a "6" with 12 zeros (NASA AstroPic Archive) (16. Nov. 2016) |