The Horsehead Nebula is lit by a quintuple star system that bathes the clouds in UV light. Sigma Ordonis A and B are an orbiting pair of blue stars; C,D, and E will eventually spin off as solo stars

NASA has created a visualization of what it would be like to fall into a black hole. It is worth those 40 seconds of your life.

Albireo is regarded as one of the finest multiple star systems in the night sky. It consists of a golden-colored giant star and a cooler blue-dwarf star. Albireo is easily separated through a small telescope.

Little is known about dark energy, except that it's repulsive. This strange force causes matter to scatter rather than attract. Dark energy makes up 68% of the universe's mass-energy density.

Enaiposha is 3 times bigger and 8 times as massive as Earth. The planet's density means a chunk of it must be lighter than rock but heavier than gas. It is likely that Enaiposha is a water world.