“Light thinks it travels faster than anything but it is wrong. No matter how fast light travels, it finds the darkness has always got there first, and is waiting for it.” –Terry Pratchett It’s the end of the week once again, and so let’s have a go at another Ask Ethan! Perhaps inspired by a great … Read moreAsk Ethan #12: How far is the distant Universe?
“I wouldn’t know a spacetime continuum or a warp core breach if they got into bed with me.” –Patrick Stewart It’s the end of the week once again, and so it’s time for another Ask Ethan segment! There have been scores of good questions to choose from that were submitted this month alone (and you … Read moreAsk Ethan #11: Why does gravity get weaker with distance?
“On a cosmic scale, our life is insignificant, yet this brief period when we appear in the world is the time in which all meaningful questions arise.” –Paul Ricoeur Ask anyone who’s looked up at a dark sky on a clear, moonless night, and you’ll immediately hear tales about how incomprehensibly vast the Universe is. … Read moreWhat does the Universe really look like?
“The views of space and time which I wish to lay before you have sprung from the soil of experimental physics, and therein lies their strength. They are radical. Henceforth space by itself, and time by itself, are doomed to fade away into mere shadows, and only a kind of union of the two will … Read morePutting Einstein to the Test
“The mind, once expanded to the dimensions of larger ideas, never returns to its original size.” –Oliver Wendell Holmes When General Relativity supplanted Newton’s work as our theory of how gravity works in the Universe, it didn’t just change how we view how masses attract, it gave us a new understanding of what the questions where … Read moreHow Big is Our Observable Universe?
“When I say, ‘I love you,’ it’s not because I want you or because I can’t have you. It has nothing to do with me. I love what you are, what you do, how you try. I’ve seen your kindness and your strength. I’ve seen the best and the worst of you. And I understand … Read moreFor the love of science
“The cosmos is all that is or ever was or ever will be. Our feeblest contemplations of the Cosmos stir us—there is a tingling in the spine, a catch in the voice, a faint sensation, as if a distant memory, or falling from a height. We know we are approaching the greatest of mysteries.” –Carl … Read moreWhy the Universe needs Dark Matter (and not MOND) in one graph
“Great spirits have always encountered violent opposition from mediocre minds.” –Albert Einstein It may be hard to believe, seeing as how it’s been our leading theory of gravity for nearly a century now, but Einstein’s General Relativity is possibly the most frequently challenged scientific idea of all-time. Of course, it’s emerged victorious from each and … Read moreA thought experiment for the relativity skeptics
“The particle and the planet are subject to the same laws and what is learned of one will be known of the other.” –James Smithson The entirety of the known Universe — from the smallest constituents of the atoms to the largest superclusters of galaxies — have more in common than you might think. Although … Read moreHave we reached the end of Particle Physics?
“You must learn to talk clearly. The jargon of scientific terminology which rolls off your tongues is mental garbage.” –Martin H. Fischer I’ve always thought that the Universe is absolutely amazing; that everything from the tiniest indivisible particles all the way up to the largest structures and superstructures making up the Universe has an amazing … Read moreSay Something Smart