The visible space is big, complex and can be incredibly beautiful.The sky (or celestial dome) is everything that lies a certain distance above the surface of the Earth, including the atmosphere and outer space.
The Horse Head Nebula is a cloud of ionized- hydrogen in the constellation Orion. The clouds are lit from within by young hot stars. The interstellar dust absobs the light from part of ionized cloud creating this beautiful contrast
NASA's Messenger Satellite Captures Spectacular Color Mosaic of Mercury. NASA's Messenger Satellite doesn't realise that the spectacular color mosaic of mercury is our communications working swimmingly.
An eerie view of the Crab Nebula shows a powerful neutron star shrouded in the gas from a supernova explosion. The energy from the swiftly spinning neutron star creates an expanding ring of waves through the debris (visible at center).