CosmosThe universe or the world.
Definitions:
The universe seen as a well-ordered whole.
ExtraterrestrialSomething or someone originating, located, or occurring outside Earth or its atmosphere.
Definitions:
Of or from outside the earth or its atmosphere.
MultiverseA hypothetical group of multiple universes.
Definitions:
The hypothetical set of multiple possible universes.
AstrophysicsThe branch of astronomy that deals with the physical properties of celestial bodies.
Definitions:
The branch of astronomy that deals with the physical properties of celestial bodies and with the interaction between matter and radiation in the interior of celestial bodies and in interstellar space.
InterstellarLocated or occurring between the stars.
Definitions:
Situated or occurring between the stars.