A solar eclipse is a rare event, and getting more rare all the time.
The Pace Of Time
Ancient astronomers tell us how Earth’s days have lengthened.
Time’s Arrow
In physics events are often time symmetric, so why is it that time so clearly seems to have a specific direction?
Slow Light
We think of light as being fast, but on a cosmic scale it’s incredibly slow.
Time After Time
Part 3 in the equations series. How a beam of light overturned 300 years of physics, and changed our view of the universe.
Equation of Time
In our modern age, we measure time by clocks calibrated to an international standard. With the exception of the occasional leap second, each day is exactly 24 hours long. So you might figure that the time between noon on Monday and noon on Tuesday is likewise 24 hours, but things are not quite so simple.