Physics

Category archives for Physics

“Youth is the gift of nature, but age is a work of art.” –Stanislaw Jerzy Lec You’ve heard it said many times here: the Universe, since the Big Bang, is 13.8 billion years old. But how do we know this to be true? Moreover, how many different lines of evidence do we have that leads…

When it comes to dark matter, the mysterious substance that makes up the vast majority of the mass in the Universe, there’s a whole lot we don’t understand or know about it. You might think that there are so many unknowns that are so huge that — quite reasonably — perhaps it doesn’t exist at all,…

“As the blackness of the night recedes so does the nadir of yesterday. The child I am forgets so quickly.” –Sylvia Ashton-Warner While the night sky is littered with thousands of points of light — the stars visible to the naked eye — we know that beyond what human perception can see, there are hundreds of…

“It was quite the most incredible event that has ever happened to me in my life. It was almost as incredible as if you fired a 15-inch shell at a piece of tissue paper and it came back and hit you.” –Ernest Rutherford Over 100 years ago, Ernest Rutherford fired a stream of alpha particles…

“Just as a Chihuahua is still a dog, these ice dwarfs are still planetary bodies. The misfit becomes the average. The Pluto-like objects are more typical in our solar system than the nearby planets we first knew.” -Alan Stern The last week here at Starts With A Bang saw some great articles that went from Pluto to stars…

“Man loves company — even if it is only that of a small burning candle.” –Georg C. Lichtenberg The Sun, like all stars initially, burns hydrogen fuel into helium through the process of nuclear fusion. But as the Sun ages, as do all stars over a certain mass, it starts burning those heavier elements in its core,…

When it comes to the fabric of our Universe, we live in four dimensions: three space and one time. At least, that’s what it seems like. But it’s possible that at very high energy scales — or at very small distance scales — not only might even more forces unify, but we might discover that…

“It’s hard to build models of inflation that don’t lead to a multiverse. It’s not impossible, so I think there’s still certainly research that needs to be done. But most models of inflation do lead to a multiverse, and evidence for inflation will be pushing us in the direction of taking [the idea of a]…

“Celebrate the independence of your nation by blowing up a small part of it.” –Summer of 4 ft. 2; The Simpsons There are few things as closely associated with American independence as our willingness and eagerness to celebrate with fiery explosions. I refer, of course, to the unique spectacle of fireworks, first developed nearly a…

“We are a singularity that makes music out of noise because we must hurry. We make a harvest of loneliness and desiring in the blank wasteland of the cosmos.” -Jack Gilbert This past week at Starts With A Bang saw five new stories about the Universe, from our own home planet to topics about the birth of…