Galaxy
Quasi-stellar Object (QSO)
A 'star-like' but extragalactic light source.
The original term for unresolved, point-like active galactic nuclei. Now used interchangeably with 'quasar'.
Overview
The original term for unresolved, point-like active galactic nuclei. Now used interchangeably with 'quasar'.
See also
Lyman-alpha Emitter
A young galaxy glowing in Lyman-alpha light.
Triangulum Galaxy (M33)
Third-largest galaxy in our Local Group.
Whirlpool Galaxy (M51)
A textbook spiral, mid-merger with a companion.
Sombrero Galaxy (M104)
An edge-on disc with a luminous bulge.
Large Magellanic Cloud
A satellite of the Milky Way, only visible from the south.
Spiral Galaxy
A flattened disc with sweeping spiral arms.