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 Drink Coffee In Space – YouTube

I love coffee. Like, a lot. You know who else loves coffee? Astronauts! And also the people who help them do awesome things in space (I think NASA might be powered by coffee). But how do astronauts actually drink coffee in space, aboard the International Space Station, in microgravity? I visited astronaut Don Pettit to learn about his invention for having a cup o’ Joe in orbit. This is some awesome science. Continue reading

Astrophysicists find elusive molecule that ‘kick-started’ the universe | CBC News

​​​​​​​They knew it had to exist, but they just couldn’t find evidence of it. Now, after decades of searching, astrophysicists have found verification of the first molecule that formed after the Big Bang. 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

Canadian astronaut David Saint-Jacques takes 1st spacewalk – CBC News

Canadian astronaut David Saint-Jacques is taking his first spacewalk this morning.  Saint-Jacques and U.S. astronaut Anne McClain tackled battery and cable work outside the International Space Station on Monday. It was the third spacewalk in just 2½ weeks for the space station crew. Today’s walk is expected to last 6½ hours. Continue reading