Dark Matter: The Larger Invisible Universe | Joe Arrigo PERSPECTIVE Normal matter—you, me, oatmeal, mountains, oceans, moons, planets, galaxies—make up about twenty-percent of the universe; the other eighty-percent is dark matter—star-stuff we cannot see or detect…yet. Why are scientists so certain this enigmatic matter exists? Because the evidence permeates the universe, first observed by Fritz Zwicky, when he measured the motions of galaxies and calculated that there wasn’t enough visible matter to affect galaxies to extent they were being pulled around.WWWFirst, there isn’t enough gravitational force within galaxies to bind and hold them in their current formation; then there is an invisible element that keeps them rotating faster than scientists would expect, clusters of galaxies bend and distort light more than they should, and supercomputer simulations exhibit that clouds of ordinary matter in the early universe did not have enough gravity to create the tight formations of galaxies we now see.
What Is The Singularity And Will You Live To See It? 1. I'm generally skeptical of the singularity and of post-scarcity economics in general. 2. 3. 4. 5. 6. What Is the Higgs? - Interactive Graphic Imagine never having seen a snowflake. Now prove one exists by probing the slush and mist of melting snow. You can’t see a Higgs boson, and no sensor can pick one out from the Higgs field that it forms. For 50 years, physicists have been building larger and more powerful accelerators to vaporize particles and sift through the debris. In the tunnels at CERN, protons are sped along a track to within a breath of the speed of light, then smashed together in a violent explosion. The protons annihilate each other, releasing a burst of energy. But Einstein tells us that mass is energy, and physics tells us that energy can’t be destroyed. An array of new particles pours from the fireball, energy spun back into tiny specks of mass. A machine surrounds and tracks the debris, bending charged particles as they plow through layers of sensors. Repeat this a million times, then tens of millions, before a second has passed. And keep going because you’re looking for something very rare. Once every few billion impacts,
Building the Universe Inside a Supercomputer As my grandfather once told me, to truly understand how something works, “you need to build it yourself.” And he knew what he was talking about. As a skilled toolmaker for all his working life he actually built the tools used to build things like jet engines to automated factory machinery. So, as I read Monday’s article about South Korean physicists building a program on one of the world’s most powerful computers to simulate the evolution of our Universe, although he wasn’t an astrophysicist himself, I knew my grandfather would instantly understand what they were hoping to achieve. SCIENCE CHANNEL VIDEO: Through the Wormhole: Dark Matter In an arXiv preprint publication submitted on Dec. 8, Juhan Kim and colleagues from the Korea Institute for Advanced Study in Seoul have completed the largest simulation of the universe ever attempted. These are staggering numbers and the calculations required a stupidly fast supercomputer — called Tachyon II — to process them.
List of Doctor Who items This is a list of items from the BBC television series Doctor Who, as well as its spin-offs Torchwood and The Sarah Jane Adventures. 0–9[edit] 2dis[edit] 3-D glasses[edit] Anaglyphic 3D glasses are used as detectors for radiation created by the Void in the world of Doctor Who The Tenth Doctor used red blue anaglyphic 3D lenses to examine the Void ship and the "ghosts" in "Army of Ghosts". The Doctor couldn't help but joke that with the glasses on, it was the first time Jackie Tyler didn't look normal to him; everyone else had Void Stuff on them. 500 year diary[edit] 900 year diary[edit] 1200 year diary[edit] Seen in a Doctor Who documentary to celebrate the 50th anniversary. 2000 year diary[edit] Seen in "The Girl Who Died", the Twelfth Doctor has a diary. A[edit] Anti-oil[edit] A red coloured liquid used to clog machinery or gears - "if it moves, it doesn't" the Doctor would explain. Anti-plastic[edit] Anti-Regeneration Gun[edit] Archangel Network[edit] Astral Map[edit] Atom Accelerator[edit] B[edit]
The Search For The History Of The Universe's Light Emission The light emitted from all objects in the Universe during its entire history - stars, galaxies, quasars etc. forms a diffuse sea of photons that permeates intergalactic space, referred to as "diffuse extragalactic background light" (EBL). Scientists have long tried to measure this fossil record of the luminous activity in the Universe in their quest to decipher the history and evolution of the Cosmos, but its direct determination from the diffuse glow of the night sky is very difficult and uncertain. Very high energy (VHE) gamma-rays, some 100,000,000,000 times more energetic than normal light, offer an alternative way to probe this background light, and UK researchers from Durham University in collaboration with international partners used the High Energy Stereoscopic System (HESS) gamma-ray telescopes in the Khomas Highlands of Namibia to observe several quasars (the most luminous VHE gamma-ray sources known) with this goal in mind. Source: PPARC
Quietest place on Earth mutes all sounds, messes with your head | Unplugged Quantum Computers Animated Can Severe Weather Trigger Earthquakes? Extreme weather events may set off quakes and recognizing those patterns may help us better forecast tremors. Cyclones, hurricanes and monsoons add stresses that can interact with the timing of tectonic stresses triggering earthquakes. Someday, scientists may be able to use weather patterns to help forecast the timing of impending earthquakes. Monsoons, hurricanes and other extreme weather events may trigger earthquakes when faults are ready to rumble. The new research presented this week at the American Geophysical Union's annual meeting in San Francisco does not suggest that all earthquakes are caused by storms or that all storms cause quakes. But by identifying some of the many conditions that put stress on faults, the new work may help scientists better forecast future tremors. Experts hope to develop more accurate ways to warn the public before massive devastation ensues. "If you push on a fault, how is it going to respond?" SCIENCE CHANNEL: Top 10 Natural Disasters