I have nothing against younger women and older men on screen. What is sad is that so many women over 40 who have so much to give aren't being considered to play opposite men their own age or younger.
Planck time is the name given to the smallest known unit of time. It's a little confusing but it measures the amount of time it takes light to travel 1 Planck length (a distance so small that it can't even be measured!).
