The brightest moon in 69 years will be lighting up the sky all week.
The phenomenon known as the supermoon will reach its most luminescent in North America before dawn today -- at 6:21 a.m. Eastern Time to be exact.
The moon will be at its brightest this week because it's coming closer to the Earth along its elliptical orbit than at any time since 1948.
Viewers will see a moon 14 per cent larger in diameter and 30 per cent brighter than when it's at its furthest from the earth -- and it won't happen again for another 18 years.