airy

alien

ambient

bell

calm

choir

contemplative

cool

discovery

dream

dreamy

easy

eerie

ethereal

extraterrestrial

fly

future

futuristic

galactic

haunting

hypnotic

interstellar

light

magical

meditative

melancholic

melancholy

mellow

mystical

new

outer space

peaceful

reflective

relax

relaxing

science

science fiction

serene

sleep

smooth

soft

soothing

space

spacious

strange

suspense

tranquil

wonder

worldly

synthesizer

synth pad