10 of 100 Crossword-Questions containing the word EON
... and another (OUT) STRETCH 1 billion years 1 billion years, in astronomy 1,000,000,000 years 1,000,000,000 years, in geology 10 megacenturies 100,000,000 decades 16TH AND 17TH CENTURIES 3.26 light years 365 billion days view all