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.

3C 273 is the brightest quasar in the sky and the second to be discovered. In 1963, Cyril Hazard used an occultation by the moon to establish its position.

The Carina Nebula boasts three rare Wolf-Rayets (WR), the hottest stars in the universe. They illuminate and ionize a dark nebula called a Bok globule.