sidereal universe

17 LETTERS · STARTS WITH S

sidereal universe is a valid 17-letter word worth 20 points in Scrabble and 24 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

S1I1D2E1R1E1A1L1U1N1I1V4E1R1S1E1

1 + 1 + 2 + 1 + 1 + 1 + 1 + 1 + 0 + 1 + 1 + 1 + 4 + 1 + 1 + 1 + 1 =20 PTS

DOUBLE WORD → 40TRIPLE WORD → 60

MEANING

What does sidereal universe mean?