A nebula is interstellar cloud of dust, hydrogen, helium and other ionized gases. The term was originally used to describe any diffused astronomical object, including galaxies beyond the Milky Way. The Andromeda Galaxy was once referred to as the Andromeda Nebula (and spiral galaxies in general as "spiral nebulae") before the true nature of galaxies was confirmed in the early 20th century by Vesto Slipher, Edwin Hubble. #stars #nebula #4kuniverse #4k #4kvideos #4kfootage Subscribe for more such stunning 4k footage."PEACE"✌️ DUBAI IN 4K: • DUBAI : LIVE YOUR STORY [ 4K UHD] | DRONE ... THESE FOOTAGE ARE LICENCED AND NOT OWNED BY US. DONT TRY TO REPLICATE ~-~~-~~~-~~-~ Please watch: "Stunning HONG KONG, CHINA 🇨🇳 [4K] | Drone Aerial Tour of Best Places" • Stunning HONG KONG, CHINA 🇨🇳 [4K] | Drone ... ~-~~-~~~-~~-~