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Brief Answers to Cosmic Questions

Brief Answers to Cosmic Questions
Structure of the Universe Does the Universe have an edge, beyond which there is nothing? Are the galaxies arranged on the surface of a sphere? Why can't we see the whole universe? Does the term "universe" refer to space, or to the matter in it, or to both? Evolution of the Universe Did the Universe expand from a point? If so, doesn't the universe have to have an edge? More about the Big Bang When they say "the universe is expanding," what exactly is expanding? Structure of the Universe Does the Universe have an edge, beyond which there is nothing? Are the galaxies arranged on the surface of a sphere? Why can't we see the whole universe? If you could suddenly freeze time everywhere in the universe, and magically survey all of creation, you would find galaxies extending out far beyond what we can see today. Does the term "universe" refer to space, or to the matter in it, or to both? Today, the situation is reversed. Evolution of the Universe Did the Universe expand from a point?

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Einstein for Everyone Einstein for Everyone Nullarbor Press 2007revisions 2008, 2010, 2011, 2012, 2013 Copyright 2007, 2008, 2010, 2011, 2012, 2013 John D. Norton Published by Nullarbor Press, 500 Fifth Avenue, Pittsburgh, Pennsylvania 15260 with offices in Liberty Ave., Pittsburgh, Pennsylvania, 15222 All Rights Reserved John D. The Measurement of Science Albert Einstein’s greatest scientific “blunder” (his word) came as a sequel to his greatest scientific achievement. That achievement was his theory of gravity, the general theory of relativity, which he introduced in 1915. Two years later, in 1917, Einstein ran into a problem while trying to apply general relativity to the Universe as a whole. At the time, Einstein believed that on large scales the Universe is static and unchanging. But he realized that general relativity predicts that such a Universe can’t exist: it would spontaneously collapse in on itself.

Nerd Paradise Posted on: 10 Cado 7:0 - 5.27.29 So you've procrastinated again. You told yourself you wouldn't do this 2 months ago when your professor assigned you this. But you procrastinated anyway. Shame on you. It's due in a few hours. Top 10 Universities With Free Courses Online #1 UC Berkeley Ranked as the #1 public school in the United States, Berkeley offers podcasts and webcasts of amazing professors lecturing. Each course has an RSS feed so you can track each new lecture.

Bad Astronomy Well now, this is an interesting discovery: astronomers have found what looks like a "super-Earth" – a planet more massive than Earth but still smaller than a gas giant – orbiting a nearby star at the right distance to have liquid water on it! Given that, it might – might – be Earthlike. This is pretty cool news. We’ve found planets like this before, but not very many! Philip Zimbardo: The Secret Powers of Time (Animated) Bio Philip Zimbardo Philip Zimbardo is internationally recognized as a leading "voice and face of contemporary psychology" through his widely seen PBS-TV series, "Discovering Psychology," his media appearances, best-selling trade books on shyness, and his classic research, The Stanford Prison Experiment. Zimbardo has been a Stanford University professor since 1968 (now an Emeritus Professor), having taught previously at Yale, NYU, and Columbia University. He continues teaching graduate students at the Pacific Graduate School of Psychology, and at the Naval Post Graduate School (Monterey). He has been given numerous awards and honors as an educator, researcher, writer, and service to the profession.

40 technologies to watch in 2011 If the popular misreading of Mayan mythology is correct, we have fewer than two more years left on this Earth. That leaves precious little time for the tech industry to develop and perfect of all the cool technologies that sci-fi authors have dreamed up over the years. Still, while a December 2012 apocalypse may spell doom for the commercial viability of hovercars, it doesn't mean that the next couple of years in tech will be dull — quite the contrary. 2011 is already shaping up to be a banner year for tech and web innovation. Below is a list of over 40 websites, apps, companies, gadgets and technologies that the editors of Mashable think that you should keep an eye on over the coming year. mental_floss Blog » History of the U.S.: A Ridiculously Long and Incomplete List of Things Ben Franklin Invented We all remember Ben Franklin as a pretty bright guy who discovered some pretty important stuff. The real question is, what didn’t this polymath genius invent? 1742: Observing the wasteful use of firewood in inefficient colonial fireplaces, he designed the Franklin Stove, which used its iron body to diffuse a much larger proportion of the heat. The stove enabled poor families to save money and be warmer in the winter.1749: Noticing that lightning was attracted to metal and tall objects, Franklin hit on the idea of attaching vertical metal rods to the tops of tall buildings to attract the lightning, thus sparing the roof a direct hit.1752: To prove that lightning was static electricity, Franklin carried out his famous kite experiment with the help of his young son William (nobody ever said he was a responsible parent).

400 Free Online Courses from Top Universities Get 1200 free online courses from the world's leading universities -- Stanford, Yale, MIT, Harvard, Berkeley, Oxford and more. You can download these audio & video courses (often from iTunes, YouTube, or university web sites) straight to your computer or mp3 player. Over 30,000 hours of free audio & video lectures, await you now. Humanities & Social Sciences Art & Art History Courses

s WMAP Science Team Awarded 2012 Gruber Cosmology Prize NASA's WMAP Science Team Awarded 2012 Gruber Cosmology Prize NASA's Wilkinson Microwave Anisotropy Probe, known as WMAP, transformed the science of cosmology by establishing the age, geometry, and contents of the universe to astonishing precision. On June 20, the Gruber Foundation recognized this accomplishment by awarding its 2012 Cosmology Prize to WMAP principal investigator Charles L. Bennett at Johns Hopkins University in Baltimore and the science team he led. The 100 Best Lifehacks of 2010: The Year in Review Happy New Year everyone! It’s the first week of 2011 and many of us are getting ready to kick off the brand new year with a big bang. As we start off 2011 with our new resolutions and goals, let us now look back at the best posts at Lifehack in the past year. In this review post, I have gathered 100 of the best LifeHack articles in 2010. These articles have been selected based on your votes and how much YOU have talked about them in social media (Facebook and Twitter).

The end of the net as we know it Posted on 21 Jan 2011 at 13:34 ISPs are threatening to cripple websites that don't pay them first. Barry Collins fears a disastrous end to net neutrality You flip open your laptop, click on the BBC iPlayer bookmark and press Play on the latest episode of QI. But instead of that tedious, plinky-plonky theme tune droning out of your laptop’s speakers, you’re left staring at the whirring, circular icon as the video buffers and buffers and buffers... That’s odd. College Paper How to write a paper in college/university: 1. Sit in a straight, comfortable chair in a well lit place in front of your computer. 2. Log onto MSN and ICQ (be sure to go on away!). Check your email.

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