Related Clues:
- "___ Flux" (Theron movie)
- Milliards of years
- Waiting time at the DMV, seemingly
- Long series of periods
- Mega-years
- Lengthy time period
- A zillion years
- Longest length of time
- Long, long time period
- At least two eras
- Very long time span
- Another way to spell 30-Down
- Very long time periods
- Very long stretch of time
- ''___ Flux'' (2005 Charlize Theron movie)