Aster

noun: aster
-A feeling or expression of calm.
-A person, act, or thing that is a success; something cool.

adjective: asterous
-Highly successful.

noun:
-“Can you feel the aster?”
“Yeah, this place has super chill vibes.”

-“That trick-flip you did was so aster.”

adjective:
-“Dude, that party was asterous.”