Misconceptions About the Universe – YouTube

The expanding universe is a complicated place. During inflation the universe expanded faster than light, but that’s something that actually happens all the time, it’s happening right now. This doesn’t violate Einstein’s theory of relativity since nothing is moving through space faster than light, it’s just that space itself is expanding such that far away objects are receding rapidly from each other. Continue reading

How to Understand the Image of a Black Hole – YouTube

We have just seen the first image of a black hole, the supermassive black hole in the galaxy M87 with a mass 6.5 billion times that of our sun. But what is that image really showing us? This is an awesome paper on the topic by J.P. Luminet: Image of a spherical black hole with thin accretion disk Astronomy and Astrophysics, vol. 75, no. 1-2, May 1979, p. 228-235 https://ve42.co/luminet Continue reading

Microwave Light Bulb – SICK Science | Science Experiments | Steve Spangler Science

This interesting resource shows what happens when a light bulb is placed in a microwave oven.  Click on the source to get a video and Steve Spangler’s explanation of how this works.

Source: Microwave Light Bulb – SICK Science | Science Experiments | Steve Spangler Science