“The joy of life consists in the exercise of one’s energies, continual growth, constant change, the enjoyment of every new experience. To stop means simply to die. The eternal mistake of mankind is to set up an attainable ideal.” –Aleister Crowley But the Universe itself experiences continual growth, constant change, and new experiences all the … Read moreThe Fundamental Constants Behind Our Universe
“Despite its name, the big bang theory is not really a theory of a bang at all. It is really only a theory of the aftermath of a bang.” –Alan Guth So you finally understand it. The Big Bang tells us that the Universe was hotter, denser, and expanding at a faster rate in the … Read moreThe Beginning of the Universe and the Limit of Knowledge
“Orbiting Earth in spaceship, I saw how beautiful our planet is. People, let us preserve and increase beauty, not destroy it!” –Yuri Gagarin Fifty-two years ago today, the first human being left Earth, and we began our journey into outer space. But back in 1961, we didn’t really know how far outer space stretched, or … Read moreInflation, Dark Energy, and the Physics of Spacetime
“Much later, when I discussed the problem with Einstein, he remarked that the introduction of the cosmological term was the biggest blunder he ever made in his life. But this “blunder,” rejected by Einstein, is still sometimes used by cosmologists even today, and the cosmological constant denoted by the Greek letter Λ rears its ugly … Read moreWhat The Entire Universe Is Made Of, Thanks to Planck!
“The aim of science is not to open the door to infinite wisdom, but to set a limit to infinite error.” –Bertolt Brecht One of the most frequent questions I get about the Universe — as a cosmologist — isn’t quite about the Big Bang in and of itself. The Big Bang is a remarkable … Read moreWhat Happened Before The Big Bang?
“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