Answer | Crossword Clue |
---|---|
AEON | Billion years, to a geologist |
EON | A billion years, to geologists |
EON | A billion years, to Hubble |
EON | One billion years to Hubble |
EON | One billion years, to an astronomer |
AEON | A billion years |
EON | A billion years |
EON | About a billion years |
AEON | A billion years (var.) |
AEON | A billion years (Var.) |
EONS | A billion years, geologically |
EON | A billion years, in astronomy |
EON | A billion years, in geology |
AEON | One spelling of a billion years |
AEON | A billion years, in astronomy (Var.) |
SOLAR | Renewable energy option, for a few billion more years anyway |