Deep-Sky Object
Debris Disc
A dust disc left after planet formation.
Dust discs around mature stars, replenished by collisions between asteroids and comets — the equivalent of an extrasolar Kuiper Belt.
Overview
Dust discs around mature stars, replenished by collisions between asteroids and comets — the equivalent of an extrasolar Kuiper Belt.
See also
Protoplanetary Nebula
The brief stage before a planetary nebula forms.
Protoplanetary Disc
A disc of gas and dust forming planets.
Circumplanetary Disc
A disc of material around a young giant planet.
Andromeda Galaxy (M31)
The farthest thing you can see with the naked eye.
Orion Nebula (M42)
A stellar nursery glowing in Orion's sword.
Pleiades (M45)
The Seven Sisters — a young blue cluster.