Hypothetical Object
Domain Wall
A two-dimensional cosmological defect.
Hypothetical sheet-like topological defects from early-universe phase transitions; if numerous, they would dominate cosmological dynamics.
Overview
Hypothetical sheet-like topological defects from early-universe phase transitions; if numerous, they would dominate cosmological dynamics.
See also
Black Dwarf
A theoretical cold white-dwarf remnant.
Blue Dwarf
A predicted future fate for some red dwarfs.
Gravastar
A black-hole alternative made of exotic vacuum.
Quark Star
A neutron star compressed into quark matter.
Strange Star
A star made of strange quark matter.
Boson Star
A self-gravitating cloud of bosonic particles.