John's Links

OpenTimes is a database of pre-computed, point-to-point travel times between United States Census geographies. It lets you download bulk travel time data for free and with no limits.

#13 took me a bit off guard.

The same side of the Moon always faces Earth, but not in exactly the same way. Due to its tilted axis and elliptical orbit, we see about 59% of its surface over time. This simulation compresses a year into 60 seconds, making the Moon’s apparent wobble, called libration, clearly visible