Watch a beaker disappear when submerged.
The vegetable oil and the borosilicate glass beaker have the same refractive index—a measure of light bending when passing from one medium into another.
Amospheric pressure vs. a vacuum
Leave it to the NFL to propaganda the robots.
This is what Earth looks like from 1.5 billion kilometers away. A pale blue dot beneath the rings of Saturn captured by the Cassini spacecraft.