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The 64-metre in diameter Parkes Radio Telescope as it was receiving live video from the Apollo 11 lunar landing, enabling 450 million viewers to watch the historic event.

This is what happens when a carrot is fired at 300 km/hour at an egg, through two sheets of cardboard. 

This is what happens if you separate out the two sheets:

The egg survives! This shows how a Whipple shield works, and is what spacecraft use to protect themselves from micrometeoroid impacts in space. When the projectile (in this case a carrot, but in space it could be a speck of paint, a piece of an old satellite, or a bit of space rock) hits the first layer, it’s moving so fast that it starts to vaporise, because the energy of the collision is enough to break almost every bond in the substance.

It then sprays outwards, spreading the force of impact across a much wider area, meaning the second layer can stop it going any further, keeping your egg (or astronauts) safe.

Flow Visualizations

Spread across the world are a legion facilities that allow the creation of artificial oceans ( wave tanks ) which are used for experimenting with surface waves. From testing simple parts for behavior to comprehension of complex flow phenomenon in oceans and seas, wave tanks are freaking awesome!

And how they work is simple:

At one end of the tank an actuator ( those giant hands that are moving in unison ) generates waves; the other end usually has a wave-absorbing surface.

Pretty cool eh?