Dark Matter

Category archives for Dark Matter

“Motions of the stars tell you how much matter there is. They don’t care what form the matter is, they just tell you that it’s there.” -Pieter van Dokkum Everything in the Universe was born with the same ratios of dark matter to normal matter: approximately 5-to-1. It shows up in everything from the cosmic…

“For me the best answer is not in words but in measurements.” -Elena Aprile If you want to find dark matter directly, your best hope is to gather a tremendous number of nucleons for it to interact with, wait an incredibly long period of time, and devise a device surrounding it capable of detecting even…

“The privilege of a lifetime is being who you are.” –Joseph Campbell Making up some 85% of the mass in our Universe, dark matter is necessary to explain the motions of individual galaxies, the grouping and clustering of assemblies of galaxies, the large-scale structure of the Universe and more. But on a much closer-to-home level,…

Why Dark Matter? (Synopsis)

“The Universe is made mostly of dark matter and dark energy, and we don’t know what either of them is.” -Saul Perlmutter When we look out at the Solar System, the Sun dominates in terms of both light and mass. Responsible for nearly 100% of the light and for 99.8% of the mass, it stands…

“If I can’t make it through one door, I’ll go through another door – or I’ll make a door. Something terrific will come no matter how dark the present.” -Rabindranath Tagore Time continues marching on here at Starts With A Bang, just as it does everywhere. My Patreon supporters have stepped up their game, and we’re just…

“A single day is enough to make us a little larger or, another time, a little smaller.” –Paul Klee When it comes to normal matter, dark matter is a bit of a puzzle. Other than through the gravitational force, there’s no way we’ve yet figured out to make it interact. Try and collide it with…

“Men occasionally stumble over the truth, but most of them pick themselves up and hurry off as if nothing ever happened.” -Winston Churchill When we look out at the Universe on the largest scales, from large-scale structure to the fluctuations in the CMB to lensed clusters of galaxies and to giant spirals and ellipticals, we…

“For the moment we might very well can them DUNNOS (for Dark Unknown Nonreflective Nondetectable Objects Somewhere).” -Bill Bryson The Sun makes up 99.8% the mass of our Solar System, yet stars account for only about 10-20% of the matter that protons, neutrons and electrons make up. Protons, neutrons and electrons — along with all…

“Eight solid light-years of lead…is the thickness of that metal in which you would need to encase yourself if you wanted to keep from being touched by neutrinos.” -Michael Chabon When it comes to dark matter, the most commonly considered candidates are WIMPs, or Weakly-Interacting Massive Particles. But with the failure of the LHC to…

“If you take everything we know… it only adds up to 5% of the Universe.” -Katie Freese One of the greatest advances of the 20th century was the discovery of the vast nature of the cosmos: that it was filled with billions of galaxies, each containing billions of stars, and that it extended in all…