The Theory Behind Theory
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An annular solar eclipse will take place on May 20, 2012 (May 21, 2012 for local time in Eastern Hemisphere), with a magnitude of 0.9439. A solar eclipse occurs when the Moon passes betweenEarth and the Sun, thereby totally or partially obscuring the image of the Sun for a viewer on Earth. An annular solar eclipse occurs when the Moon’s apparent diameter is smaller than the Sun, causing the Sun to look like an ...
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z A Absolute Zero Absorption Spectrum Acceleration Accretion Disk Active Galaxy Angular Momentum Angular Size Anthropic Principle Anthropocentrism Anthropomorphism Antimatter Arrow of Time Atom B Baryogenesis Baryon Baryon Number Conservation Biased galaxy formation Big Bang Big Crunch Birkhoff's Theorem Blackbody Black Hole BL ...
Researchers say life-bearing planets may exist in vast numbers in the space between stars in the Milky Way. A few hundred trillion free-floating life-bearing Earth-sized planets may exist in the space between stars in the Milky Way. So argues an international team of scientists led by Professor Chandra Wickramasinghe, Director of the Buckingham Centre for Astrobiology at the University of Buckingham, UK. Their findings are published online in the Springer ...
Perhaps more than all other federal agencies, NASA tells stories about big things: big places, big data, big ideas. Using extraordinarily high resolution data sets from some of the most innovative and powerful scientific instruments ever built, the media team at NASA Goddard presents PURSUIT OF LIGHT. The presentation showcases top level goals of NASA's Science Mission Directorate, with an eye toward capturing the imagination of mainstream audiences. Data visualizations ...
Scientists are planning to use NASA's Hubble Space Telescope to observe next month's historic transit of Venus across the sun's face -- but there's a twist: Researchers can't point Hubble anywhere near the sun, because our star's bright light could damage the telescope's super-sensitive instruments. So Hubble will watch the June 5-6 Venus transit by using the moon as a mirror. The goal is to see if Hubble can determine ...
The exploding stars known as Type Ia supernovae serve an important role in measuring the universe, and were used to discover the existence of dark energy. They're bright enough to see across large distances, and similar enough to act as a "standard candle" -- an object of known luminosity. The 2011 Nobel Prize in Physics was awarded for the discovery of the accelerating universe using Type Ia supernovae. However, an embarrassing ...
Computer simulations of high-energy particle collisions provide a detailed theoretical reference for the measurements performed at accelerators like the Large Hadron Collider (LHC), against which models of both known and 'new' physics can be tested, down to the level of individual particles. By looking for discrepancies between the simulations and the data, we are searching for any sign of disagreement between the current theories and the physical universe. Ultimately, such a disagreement could lead us to the discovery of new phenomena, which may be associated with new fundamental principles of Nature. Less spectacular discrepancies also help guide us towards the most accurate possible description of the Standard Model of Particle Physics and its phenomena - refining the simulations of the known physical laws, by pointing to areas where current simulations succeed and where they fail.
UPDATE -- The developers of PHP have released new versions of the scripting language to fix a remotely exploitable vulnerability announced earlier this week that enables an attacker to pass command-line arguments to the PHP binary. The flaw has been in the code for more than eight years and The PHP Group was working on a patch for it when the bug was disclosed accidentally on Reddit. The new versions ...
A historic Saturn V moon rocket was damaged by gunfire Thursday.