What are galaxy clusters made of, besides galaxies? How can we use them to understand dark matter? And how can we make pretend ones on a computer?
Apr 16th: What are the mighty clusters of galaxies?
Tag: Ask A Spaceman
Apr 2nd: What is the black hole information paradox?
What is “information” in physics? Why do we think it’s preserved, and what happens to information when it falls into a black hole? Why is this a problem? I discuss these questions and more in today’s Ask a Spaceman!
Mar 19th: Why Avoid the Cosmic Voids?
How do cosmic voids form? What do they teach us about dark energy? What did the early universe look like?
Mar 5th: Do we live in the multiverse?
What’s the difference between the universe and the multiverse? Do we live in the multiverse? @PaulMattSutter at #365DaysOfAstro
Feb 19th: Who’s In Charge Of The Quantum World?
How did Max Planck accidentally discover quantum mechanics? Why is his constant so special? #AskASpaceman with @PaulMattSutter
Feb 5th: What makes the strong force so strong?
Why is the strong force better known as the “color force”? What’s the best way to think about protons and quarks?
Jan 15th: Hey, Who Took All The Antimatter?
Why are matter and antimatter symmetric? What happened in the early universe to make matter win? Do we have any clue as to why? What do puppies have to do with it? I discuss these questions and more in today’s Ask a Spaceman!
Jan 1st: Does Light Experience Time?
What does ‘time’ mean for light? What is the real lesson of the twin paradox? How can we all agree on the true age of the universe? Why is it all so technical?
Dec 18th: How Did We Figure Out that Stuff is Made of Atoms?
How and when did we realize that atoms exist? How did we learn to understand their properties? How was Ernest Rutherford hogging all the science for himself? find the answer here at #365DaysOfAstro with @PaulMattSutter
Dec 4th: Does the Oort Cloud Exist?
Where is the Oort Cloud and what is it made of? Why do we think some comets from there? If the Oort Cloud exists, how did it form?