thekidshouldseethis:

How Far Away is the Moon? (The Scale of the Universe)

And related watching: Why Does the Moon Orbit the Earth?

It takes the moon about 27 days to orbit the Earth. What makes it go round? It is the gravitational attraction of the Earth on the moon. Due to the moon’s velocity, the Earth keeps pulling the moon towards it without the moon actually getting closer to the Earth. This is similar to how satellites orbit the Earth. 

Thanks, @metrprof.

thekidshouldseethis:

Meanwhile in Japan, how about a waterfall clock? Functioning almost like a “water printer” that displays, not only the time, but intricate Japanese-style flora patterns, Osaka City Station’s water fountain technology is fascinating to watch. You can see another view of the installation here. 

Thanks, Berthold.

Louw

cool