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Keyword: gravity

Brevity: Headers | « Text »
  • Six weighty facts about gravity

    04/06/2016 7:36:51 PM PDT · by MtnClimber · 30 replies
    Symmetry Magazine ^ | 5 Apr, 2016 | Matthew R. Francis
    Gravity: we barely ever think about it, at least until we slip on ice or stumble on the stairs. To many ancient thinkers, gravity wasn’t even a force—it was just the natural tendency of objects to sink toward the center of Earth, while planets were subject to other, unrelated laws. Of course, we now know that gravity does far more than make things fall down. It governs the motion of planets around the Sun, holds galaxies together and determines the structure of the universe itself. We also recognize that gravity is one of the four fundamental forces of nature, along...
  • Astronomers find supermassive black hole in giant galaxy 300 million light years away

    02/18/2016 1:21:04 PM PST · by Red Badger · 21 replies
    www.foxnews.com ^ | Published February 18, 2016 | Staff
    This image taken by the Hubble Space Telescope shows the elliptical galaxy NGC 4889 (arrowed) in front of hundreds of background galaxies. Well-hidden from human eyes, there is a gigantic supermassive black hole at the centre of the galaxy. (Credit: NASA & ESA) ===================================================================================================================================== Astronomers have found one of the largest-ever black holes in giant galaxy NGC 4889, some 300 million light years away. The Hubble space telescope has captured an incredible image of elliptical galaxy NGC 4889, which is located in the Coma Cluster. Scientists, however, note that the giant galaxy harbors a dark secret. The European Space Agency...
  • What impact does the detection of gravitational waves have on biblical creation?

    02/17/2016 8:11:19 AM PST · by fishtank · 33 replies
    Creation Ministries International ^ | 2-16-16 | John G. Hartnett
    What impact does the detection of gravitational waves have on biblical creation? By John G. Hartnett Summary Gravitational waves as predicted by Einstein were observed by the LIGO observatories for the first time on September 14, 2015. The detection strongly supports Einstein’s general theory of relativity published in 1916 where Einstein predicted such a phenomenon. No evidence for violation of general relativity was observed. A binary pair of black holes were observed to coalesce—the first time their existence confirmed. Their distance, determined from luminosity, is about 1.3 billion light-years. The black holes had masses of 36 M⊙ (mass of Sun)...
  • Astronomy Picture of the Day -- LIGO Detects Gravitational Waves from Merging Black Holes

    02/11/2016 4:37:17 PM PST · by SunkenCiv · 30 replies
    NASA ^ | February 11, 2016 | (see photo credit)
    Explanation: Gravitational radiation has been directly detected. The first-ever detection was made by both facilities of the Laser Interferometer Gravitational-Wave Observatory (LIGO) in Washington and Louisiana simultaneously last September. After numerous consistency checks, the resulting 5-sigma discovery was published today. The measured gravitational waves match those expected from two large black holes merging after a death spiral in a distant galaxy, with the resulting new black hole momentarily vibrating in a rapid ringdown. A phenomenon predicted by Einstein, the historic discovery confirms a cornerstone of humanity's understanding of gravity and basic physics. It is also the most direct detection of...
  • Einstein's gravitational waves 'seen' from black holes

    02/11/2016 9:49:13 AM PST · by jpsb · 40 replies
    BBC ^ | Fed 11, 2016 | Pallab Ghosh
    Scientists are claiming a stunning discovery in their quest to fully understand gravity.
  • Gravitational Waves and How They Distort Space

    02/08/2016 7:24:43 PM PST · by BenLurkin · 52 replies
    universe today ^ | 02/08/2016 | Markus Pössel
    February 11, 10:30 EST, there will be a big press conference about gravitational waves by the people running the gravitational wave detector LIGO. It's a fair bet that they will announce the first direct detection of gravitational waves, predicted by Albert Einstein 100 years ago. If all goes as the scientists hope, this will be the kick-off for an era of gravitational wave astronomy: for learning about some of the most extreme and violent events in the cosmos by measuring the tiny ripples of space distortions that emanate from them. In the words of the eminent relativist John Wheeler, Einstein’s...
  • CEO who gave everyone a $70K minimum wage faces more questions (rut-roh)

    02/03/2016 8:49:57 PM PST · by ak267 · 3 replies
    hot air ^ | 2-3-2016 | Jazz Shaw
    The twisted tale of Gravity Payments CEO Dan Price continues to grow more and more convoluted as time goes by. There was a time when the public – particularly the heavily progressive, SJW segment of it – were carrying Price on their shoulders like the second coming of Jesus.
  • {snip} Researcher reveals scheme to create and control gravitational fields using current technology

    01/09/2016 9:58:03 AM PST · by BenLurkin · 26 replies
    Dailymail.com ^ | 8 January 2016 | Cheyenne Macdonald For
    'The most widespread source of gravitation is the inertial mass, which produces permanent gravitational fields. 'At the opposite, electromagnetic fields could be used to generate artificial, or human-made, gravitational fields, that could be switched on or off at will, depending whether their electromagnetic progenitors are present or not.' The experiment would require major resources, but if successful, it would give humans the power to control the 'last of four fundamental forces,' not within our grips. Current research, the scientist argues, observes and aims to understand gravitational fields, but makes no attempts to change them. 'Somehow, studying gravity is a contemplative...
  • Daredevil falls to his death as he tries to climb Midtown's Four Seasons Hotel with friend

    12/31/2015 8:10:19 AM PST · by BenLurkin · 37 replies
    nydailynews ^ | 12/31/2015 | Joseph Stepansky, John Annese, Thomas Tracy /
    Connor Cummings, of Rockaway, N.J., and an 18-year-old pal managed to get onto an upper floor of the landmark hotel overlooking Central Park with several pieces of camera equipment Wednesday night, despite not being guests there, police said. They then attempted to climb scaffolding in an interior shaft leading to the roof of the 52 story luxury E. 57th St. hotel, police sources said. Cummings and his friend were nearing the roof when Cummings slipped and fell nine stories, crashing onto a 43rd floor landing, police said. He died at the scene.
  • What Are Quantum Gravity's Alternatives To String Theory?

    12/19/2015 7:19:11 AM PST · by C19fan · 19 replies
    Fortune ^ | December 17, 2015 | Ethan Slegel
    The Universe we know and love — with Einstein’s General Relativity as our theory of gravity and quantum field theories of the other three forces — has a problem that we don’t often talk about: it’s incomplete, and we know it. Einstein’s theory on its own is just fine, describing how matter-and-energy relate to the curvature of space-and-time. Quantum field theories on their own are fine as well, describing how particles interact and experience forces. Normally, the quantum field theory calculations are done in flat space, where spacetime isn’t curved. We can do them in the curved space described by...
  • Spacecraft Launches to Test the Hunt for Ripples in the Fabric of Spacetime

    12/03/2015 5:00:08 PM PST · by BenLurkin · 23 replies
    universetoday.com ^ | on December 3, 2015 | Nancy Atkinson
    The European Space Agency successfully launched the LISA Pathfinder, a spacecraft designed to demonstrate technology for observing gravitational waves in space. The launch took place at Europe’s spaceport in Kourou, French Guiana on a Vega rocket, at 4:04 GMT on December 3, (10:04 pm EST Dec 2), 2015. Gravitational waves are ripples in the fabric of spacetime, which were predicted by Albert Einstein in his General Theory of Relativity. So far, because they are extremely tiny and incredibly faint, gravitational waves have proved to be elusive. The technology needed to detect them is highly sensitive and therefore has been difficult...
  • Lift-off for Lisa Pathfinder! Mission to detect Einstein's gravitational waves successfully [tr]

    12/03/2015 6:10:56 AM PST · by C19fan · 4 replies
    UK Daily Mail ^ | December 3, 2015 | Richard Gray
    A Vega rocket carrying the European Space Agency's Lisa Pathfinder has finally blasted into orbit after being delayed by a 'technical issue'. The rocket, with the probe mounted on top, lifted off earlier today in Kourou, French Guiana, to begin its mission to hunt for gravitational waves in space. Gravitational waves are ripples in the fabric of space-time, predicted a century ago by Albert Einstein's General Theory of Relativity, but until now have proved elusive. The rocket had been expected to launch on 2 December - exactly 100 years since Einstein published his theory - but 'technical issues' delayed it...
  • The "Robin Hood" CEO Who Famously Raised His Employees' Minimum Wage To $70,000 Has A Dirty Secret

    12/01/2015 7:48:39 PM PST · by ak267 · 25 replies
    Zero Hedge ^ | 12-01-2015 | Tyler Durden
    When Gravity Payment's CEO Dan Price announced on April 13 that he would raise the minimum wage of his staff to $70,000 a year, the story went beyond viral: it took the media, especially the part of it which has been obsessing with income and wealth inequality which in the aftermath of Piketty would be most of it, by meteoric storm. Not only that, but the soon to be lionized young chief executive doubled down on this story of "purest of corporate nobility" by announcing he would cut his own compensation of $1.1 million to offset the cost.
  • So Many Lonely Planets with No Star to Guide Them

    05/19/2011 3:01:51 PM PDT · by SunkenCiv · 13 replies
    Nature ^ | Wednesday, May 18, 2011 | Nadia Drake
    Scattered about the Milky Way are floating, Jupiter-mass objects, which are likely to be planets wandering around the Galaxy's core instead of orbiting host stars. But these planets aren't rare occurrences in the interstellar sea: the drifters might be nearly twice as numerous as the most common stars. "This is an amazing result, and if it's right, the implications for planet formation are profound," says astronomer Debra Fischer at Yale University in New Haven, Connecticut. To find the wanderers, scientists turned their telescopes towards the Galactic Bulge surrounding the centre of the Milky Way. Using a technique called gravitational microlensing,...
  • Could We Make Artificial Gravity?

    07/30/2015 1:41:07 PM PDT · by BenLurkin · 26 replies
    universetoday.com ^ | Fraser Cain
    The only way to get gravity is with mass. The more mass, the more gravity you get. Without mass, you can’t have gravity. ... The force of gravity that we feel is actually just an acceleration towards the center of the Earth at 9.8 meters per second squared, or 1G. If you were in a spacecraft and it was accelerating away from Earth at a rate of 1G, it would feel exactly the same if you were standing on the ground. ... Want to fly to Jupiter? It would only take about 80 hours of acceleration, and then 80 hours...
  • Gravity Simulator

    07/23/2015 12:57:13 AM PDT · by LibWhacker · 12 replies
    Click here
  • He's Back! Biden Says Climate Change Critics "Deny Gravity"

    06/17/2015 4:24:28 AM PDT · by Biggirl · 35 replies
    Breitbart.com ^ | June 17,2015 | Charles Spiering
    Vice President Joe Biden returned to the public stage today for a speech at the White House Clean Energy Summit, blasting Republicans for denying climate change.
  • ‘Beautiful Mind’ Mathematician John Nash Replaced Einstein’s Theory Of Relativity Days Before Death

    06/01/2015 12:19:56 AM PDT · by 2ndDivisionVet · 104 replies
    The Inquisitr News ^ | May 30, 2015 | Tara West
    John Forbes Nash Jr. was a mathematical genius who had his life chronicled in the movie A Beautiful Mind. One of Nash’s colleagues says that just days before he died in a New York taxi cab accident, he had discussed his latest and possibly most brilliant discovery to date. Mathematician Cédric Villan says that Nash told him that he had replaced Einstein’s Theory of Relativity and that the new equation would further explain quantum gravity. The Daily Mail reports that on May 20, 2015, just three days before the tax cab accident that would take his life, Nash spoke to...
  • Mathematicians Chase Moonshine’s Shadow

    03/13/2015 6:10:51 AM PDT · by LibWhacker · 19 replies
    Quanta Magazine ^ | 3/12/15 | Erica Klarreich
    Mathematicians Chase Moonshine’s Shadow Researchers are on the trail of a mysterious connection between number theory, algebra and string theory. In 1978, the mathematician John McKay noticed what seemed like an odd coincidence. He had been studying the different ways of representing the structure of a mysterious entity called the monster group, a gargantuan algebraic object that, mathematicians believed, captured a new kind of symmetry. Mathematicians weren’t sure that the monster group actually existed, but they knew that if it did exist, it acted in special ways in particular dimensions, the first two of which were 1 and 196,883.McKay, of...
  • Astronomy Picture of the Day -- The Potsdam Gravity Potato

    12/15/2014 3:22:41 AM PST · by SunkenCiv · 50 replies
    NASA ^ | December 15, 2014 | (see photo credit)
    Explanation: Why do some places on Earth have higher gravity than others? Sometimes the reason is unknown. To help better understand the Earth's surface, sensitive measurments by the orbiting satellites GRACE and CHAMP were used to create a map of Earth's gravitational field. Since a center for studying this data is in Potsdam, Germany, and since the result makes the Earth look somewhat like a potato, the resulting geoid has been referred to as the Potsdam Gravity Potato. High areas on this map, colored red, indicate areas where gravity is slightly stronger than usual, while in blue areas gravity is...
  • 2 Futures Can Explain Time's Mysterious Past

    12/10/2014 3:59:19 PM PST · by LibWhacker · 22 replies
    Scientific American ^ | 12/8/14 | Lee Billings
    2 Futures Can Explain Time's Mysterious Past New theories suggest the big bang was not the beginning, and that we may live in the past of a parallel universe December 8, 2014 |By Lee Billings In the evolution of cosmic structure, is entropy or gravity the more dominant force? The answer to this question has deep implications for the universe's future, as well as its past. Credit: NASA; ESA; G. Illingworth, D. Magee, and P. Oesch, University of California, Santa Cruz; R. Bouwens, Leiden University; and the HUDF09 TeamPhysicists have a problem with time.   Whether through Newton’s gravitation, Maxwell’s...
  • Quantum gravity: The most exciting discovery in physics could come about thanks to telecoms satellit

    11/28/2014 9:51:43 AM PST · by LibWhacker · 39 replies
    aeon ^ | 11/11/14 | Sidney Perkowitz
    Quantum gravity The most exciting discovery in physics could come about thanks to telecoms satellites. Is a single theory of reality in sight? Kindle ESA’s Optical Ground Station in the Canary Islands has set a new distance world record in ‘quantum teleportation’ by reproducing the characteristics of a light particle across 143 km of open air. Photo courtesy ESA Sidney Perkowitz is professor of physics emeritus at Emory University in Atlanta. His latest books are Slow Light (2011) and Hollywood Chemistry (2014), and he is at work on a new edition of Universal Foam (2001). Watching a rocket as it...
  • Brian Cox visits the world's biggest vacuum chamber - Human Universe:BBC Two

    11/15/2014 6:04:26 PM PST · by TurboZamboni · 24 replies
    you tube ^ | 10-24-14 | bbc
    Your physics teacher always told you this was true. You've never seen it until now. A lot of Newtonian physics happens in this hypothetical world where no outside forces act upon an object. But Earth isn't a vacuum, and outside forces are acting on objects all the time! Now, for the first time, you can see proof of what your physics teacher was telling you right in front of your eyes. Brian Cox visits NASA’s Space Power Facility in Ohio to see what happens when a bowling ball and a feather are dropped together under the conditions of outer space.
  • Why India's Mars mission is so cheap - and thrilling [Cheaper than the Hollywood Film: 'Gravity']

    09/25/2014 8:30:42 PM PDT · by SeekAndFind · 49 replies
    BBC News ^ | 09/25/2014 | Jonathan Amos
    India's space programme has succeeded at the first attempt where others have failed - by sending an operational mission to Mars. The Mangalyaan satellite was confirmed to be in orbit shortly after 0800, Indian time. It is, without doubt, a considerable achievement. This is a mission that has been budgeted at 4.5bn rupees ($74m), which, by Western standards, is staggeringly cheap. The American Maven orbiter that arrived at the Red Planet on Monday is costing almost 10 times as much. Back in June, Indian Prime Minister Narendra Modi even quipped that India's real-life Martian adventure was costing less than the...
  • Plans to drop a piano off 26-storey east London flats blocked by concerned residents

    07/10/2014 12:34:51 PM PDT · by Rebelbase · 31 replies
    London24.com ^ | 7/10/14 | Mark Shales
    Plans by a Turner Prize-nominated artist to drop a piano off an iconic east London tower block have been thwarted by residents, who were concerned over the “danger and utter stupidity” of the stunt. Catherine Yass had been scheduled to hurl the instrument off the top of the 26-storey Balfron Tower in Poplar – but a petition signed by 254 locals forced organisers to change their tune. Retired nurse Jean Brown, 66, of nearby Burcham Street, was concerned about the “danger and utter stupidity”, and amazed the idea had even been suggested. “People seem to have finally come to their...
  • Update on Podkletnov gravity modification work and rumors

    06/18/2014 1:36:15 AM PDT · by Renfield · 18 replies
    Next Big Future ^ | 5-14-2014 | Brian Wang
    American Antigravity interviewed Eugene Podkletnov to discuss recent (2004 to 2013) experimental antigravity research in gravity modification and superconductors. For nearly two decades Dr. Podkletnov has been researching the link between gravitation and high-temperature superconductors, and just recently published the peer-review results of new experiments he’s conducted to measure the speed of a force-beam projected by a stationary superconducting apparatus he’s developed. Podkletnov is well-known for his experiments involving YBCO superconductors, which produced a gravity-shielding effect that was investigated by NASA and has been the subject of many peer-review papers. He describes continuing his experiments in this area, and indicates...
  • Mapping the road to quantum gravity

    04/26/2014 5:36:47 AM PDT · by onedoug · 9 replies
    Science Daily ^ | 23 APR 2014 | Perimeter Institute for Theoretical Physics
    The road uniting quantum field theory and general relativity -- the two great theories of modern physics -- has been impassable for 80 years. Could a tool from condensed matter physics finally help map the way?
  • I Have Published Nation OF One (shameless vanity)

    04/22/2014 8:24:35 AM PDT · by lafroste · 12 replies
    Novel Website ^ | 4/22/14 | Matthew Harbert
    I am pleased to announce the publication of my new novel Nation Of One. Some here at FR have already read a draft version and I received some very good comments. This fictional story is one of a great discovery and great responsibility, of science and insanity. There are no aliens, weird weapons, or paranormal activities. This a great escapist, lazy day at the beach kind of novel that I know you'll enjoy. So if you have a mind to help my efforts, click on the link above and help spread the word! Thank you very much and CONSTRUCTIVE criticism...
  • Can You Escape the Force of Gravity? [What is gravity?]

    04/07/2014 9:17:43 AM PDT · by BenLurkin · 70 replies
    universetoday ^ | April 7, 2014 | Fraser Cain on
    There’s no end to it. Gravity appears to be madly greedy and long armed. Members of the Virgo Super cluster are connected to each other, and they’re dozens of millions of light-years apart. Objects in the Pisces-Cetus Super cluster complex are even connected to each other by our invisible and obnoxiously possessive friend. And they are hundreds of millions of light years apart… In fact, you’re so popular that you are gravitationally pulled towards even most distant object in the observable Universe. And they, in turn, are linked to you. As a result, without the outward expansion and acceleration of...
  • The First Test That Proves General Theory of Relativity Wrong

    02/20/2014 3:47:32 PM PST · by Kevmo · 290 replies
    Softpedia.com ^ | March 24th, 2006, 12:39 GMT · | By Vlad Tarko
    http://news.softpedia.com/news/The-First-Test-That-Proves-General-Theory-of-Relativity-Wrong-20259.shtml According to Einstein's theory of general relativity, a moving mass should create another field, called gravitomagnetic field, besides its static gravitational field. This field has now been measured for the first time and to the scientists' astonishment, it proved to be no less than one hundred million trillion times larger than Einstein's General Relativity predicts. According to Einstein's theory of general relativity, a moving mass should create another field, called gravitomagnetic field, besides its static gravitational field. This field has now been measured for the first time and to the scientists' astonishment, it proved to be no less than...
  • January 4, 2014 Planetary Alignment Decreases Gravity

    12/28/2013 5:00:34 PM PST · by kjam22 · 116 replies
    www.newshound.net ^ | Dec 16, 2013 | news hound
    It has been revealed by the British astronomer Patrick Moore that, on the morning of January 4th 2014, an extraordinary astronomical event will occur. At exactly 9:47 am, the planet Pluto will pass directly behind Jupiter, in relation to the Earth. This rare alignment will mean that the combined gravitational force of the two planets would exert a stronger tidal pull, temporarily counteracting the Earth’s own gravity and making people weigh less. Moore calls this the Jovian-Plutonian Gravitational Effect. Astronomers have long been aware that there would be an alignment of the planets on that date, when Mercury, Venus, Earth,...
  • Could Particle ‘Spooky Action’ Define The Nature Of Gravity?

    12/05/2013 5:24:00 PM PST · by BenLurkin · 17 replies
    universetoday.com ^ | December 5, 2013 | Elizabeth Howell on
    Sonner then set about to create quarks to see if he could watch what happens when two are entangled with each other. Using an electric field, he was able to catch pairs of particles coming out of a vacuum environment with a few “transient” particles in it. - Once he caught the particles, he mapped them in terms of space-time (four-dimensional space). Note: gravity is believed to be the fifth dimension because it can bend space-time [5th Dimension?], as you can see in these images of galaxies below. - Sonner then tried to figure out what would happen in the...
  • Superhero Disappears in the High-Tech World

    10/25/2013 10:32:29 AM PDT · by Kaslin · 2 replies
    Townhall.com ^ | October 25, 2013 | Suzanne Fields
    We no longer have to play at goblins and ghosts on Halloween. We've got real snoops and authentic spooks, and they're plenty scary, reading our mail and tracing us through social media. Safety and security are the crucial domestic interests in the high-tech world where we all live. We feel helpless in trying to keep control over our most minute musings; we're sure that Big Brother is watching us, and not necessarily to watch over us. It's the season when doubts and fears, some real and some not, assail. We're frustrated with the breakout of Obamacare, which betrayed its...
  • What a real NASA astronaut thinks of the film Gravity

    10/18/2013 7:52:29 PM PDT · by SoFloFreeper · 61 replies
    Herald Sun ^ | 10/19/13 | GARRETT REISMAN, FORMER NASA ASTRONAUT FORBES
    GRAVITY is the most realistic space movie ever. I mean, that Clooney guy looks just like me! Actually I've been besieged with questions about what I thought about this movie ever since it came out. Just here at work at SpaceX last week,I was asked that question about a dozen times a day. I quipped that "What do you think of Gravity?" was becoming every astronaut's least favourite question, surpassing even "How do you poop in space?" So, to help me deal with this onslaught, here is my more serious attempt at a movie review: First of all, it's a...
  • (Film Critic) SDG Reviews 'Gravity' (for National Catholic Register)

    10/04/2013 1:47:26 PM PDT · by NYer · 48 replies
    NC Register ^ | October 3, 2013 | STEVEN D. GREYDANUS
    Sandra Bullock shines in Alfonso Cuarón’s mesmerizing action thriller in space, a rare Hollywood spectacle with a touch of spiritual awareness. We see so many big-budget science-fiction spectacles —  so many painstakingly realized fantasy worlds and lavishly rendered alien landscapes and environments, inhabited by extravagantly imagined extraterrestrial species, with fantastic spacecraft and starships traveling through hyperspace and all manner of wormholes, nebulae and so forth. Yet simple weightlessness, though no more exotic than the space shuttle, remains among the most fascinating, captivating effects in any Hollywood production of recent years. It’s an effect put to mesmerizing use by Alfonso Cuarón in...
  • Box Office: 'Gravity' Soars, Sets October Record With $55.8 Million Debut [Older Audience Blamed]

    10/07/2013 10:37:12 AM PDT · by Red Badger · 100 replies
    Hollywood Reporter ^ | 1:21 PM PDT 10/4/2013 | by Pamela McClintock
    UPDATED: The Sandra Bullock-George Clooney space epic -- fueled by adults -- does huge business in 3D; Justin Timberlake-Ben Affleck poker thriller "Runner Runner" folds with $7.6 million. Once again proving the power of older moviegoers, Alfonso Cuaron's 3D space epic Gravity debuted to a record-breaking $55.8 million in North America, the top October opening of all-time and the best three-day showing for stars Sandra Bullock and George Clooney. Overseas, Gravity also won the weekend with a solid $27.4 million from 27 markets for a worldwide total of $83 million. Gravity's launch caps a substantial production and marketing effort by...
  • How to see quantum gravity in Big Bang traces

    09/30/2013 11:28:55 PM PDT · by LibWhacker · 11 replies
    Nature ^ | 9/27/13 | Ron Cowen
    The cosmic microwave background sky, here mapped by NASA's Wilkinson Microwave Anisotropy Probe, has a polarization, represented by white bars. Future experiments might measure the polarization with enough sensitivity to prove the existence of gravitons, the quanta of gravity. Can a quantum of gravity ever be detected? Two physicists suggest that it can — using the entire Universe as a detector. Researchers think that the gravitational force is transmitted by an elementary particle called the graviton, just as the electromagnetic force is carried by photons. But most of them despair about ever recording individual gravitons. That is because gravity is...
  • Gravity assist (spacecraft slingshot maneuver... how it works)

    09/28/2013 1:49:13 PM PDT · by LibWhacker · 18 replies
    The Planetary Society ^ | 9/27/13 | David Shortt
    With the recent announcement by NASA that the 36 year-old spacecraft Voyager 1 has officially entered interstellar space at a distance from the Sun about four times further than Neptune's orbit, and with Voyager 2 not far behind, it seems worthwhile to explore how humans managed to fling objects so far into space. Interplanetary spacecraft often use a maneuver called a gravity assist in order to reach their targets. Voyager 2 famously used gravity assists to visit Jupiter, Saturn, Uranus and Neptune in the late 1970s and 1980s. Cassini used two assists at Venus and one each at Earth and...
  • New force potentially stronger than gravity discovered ( With cosmic Dust )

    08/09/2013 12:21:13 PM PDT · by Ernest_at_the_Beach · 22 replies
    Vr-zone ^ | July 26, 2013 2:40 am | David Farrell
    The Blackbody force is a newly discovered force that attracts atoms and molecules to hot, opaque objects emitting blackbody radiation. Under certain circumstances, the new force is stronger than gravity.
  • 3D Printer Passes Zero-Gravity Test for Space Station Trip

    06/20/2013 7:24:36 AM PDT · by LibWhacker · 6 replies
    Space.com ^ | 6/19/13 | Mike Wall
    A 3D printer bound for the International Space Station in 2014 has passed a series of key microgravity flight tests, the device's builders say. Three prototype versions of space manufacturing startup Made in Space's 3D printer showed their stuff during four airplane flights that achieved brief periods of microgravity via parabolic maneuvers, company officials announced today (June 19). "Today, we demonstrated that our 3D printers can print in microgravity," Made in Space strategic officer Mike Chen said in a statement. "Next year, we will demonstrate that they can print on the International Space Station." 3D printers use a technique called...
  • CURSE you, EINSTEIN! Humanity still chained in relativistic PRISON

    04/26/2013 10:05:36 AM PDT · by Red Badger · 15 replies
    www.theregister.co.uk ^ | 04-26-2013 | By Lewis Page
    'Collapsar jump' from Forever War seemingly not on cards Disappointing news on the science wires today, as new research indicates that a possible means of subverting the laws of physics to allow interstellar travel apparently doesn't work. As we are told in a new paper just published in hefty boffinry mag Science: Neutron stars with masses above 1.8 solar masses possess extreme gravitational fields, which may give rise to phenomena outside general relativity. That would be quite handy, as one of the rules of general relativity is that nothing can travel faster than light: which means that journeys between the...
  • Einstein Proved Right on Gravity—Again

    04/25/2013 1:10:04 PM PDT · by SeekAndFind · 42 replies
    Wall Street Journal ^ | 04/25/2013 | Gautam Naik
    Scientists have subjected Albert Einstein's famous theory of gravity to its toughest real-world test so far—and it has prevailed. Einstein's general theory of relativity states that objects with mass cause a curvature in space-time, which we perceive as gravity. Space-time, according to Einstein's theories of relativity, is a four-dimensional fabric woven together by space and time. For example, a bowling ball causes a dent in a mattress, and that dent changes the otherwise straight motion of a nearby marble on the same mattress. Similarly, the mass of the sun distorts the space-time around it. A body with less mass, like...
  • Take 5 Minutes to See What the Moon Will Do During 2013

    11/25/2012 10:55:49 AM PST · by Errant · 86 replies
    Universe Today ^ | 20 November, 2012 | NANCY ATKINSON
    This new video shows exactly how the Moon will look to us on Earth during the entire year of 2013. While the Moon always keeps the same face to us, it’s not exactly the same face. Because of the tilt in its axis and shape of its orbit, we see the Moon from slightly different angles over the course of a month, and the year. Normally, we don’t see how the Moon “wobbles” in its orbit or as it moves closer and farther away from Earth. But seeing the entire year compressed down to 5 minutes, we can see the...
  • Awesome HD Slinky Slow-Mo…Does Gravity Really Work Like We Think It Does?

    10/04/2012 4:04:07 PM PDT · by jwsea55 · 83 replies
    Veritasium ^ | Sept 29, 2012 | Jim Caldwell
    Watching this video, I have to ask, do we really understand gravity? When we release an object from our hands, it falls. Right? Not always? Or at least, not right away? Veritasium has put some pretty cool videos to explain how science and physics work. They have been working with slinkies on a number of videos (and you thought your kid didn’t have any potential at 3 years old), this video seems to capture the essences of their work. So listening to a couple of science guys explain this, does this give one a solid enough understanding why that darn...
  • Pulsars: The universe's gift to physics

    03/28/2012 8:26:40 PM PDT · by U-238 · 13 replies
    Astronomy Magazine ^ | 2/20/2012 | NRAO
    Pulsars, superdense neutron stars, are perhaps the most extraordinary physics laboratories in the universe. Research on these extreme and exotic objects already has produced two Nobel Prizes. Pulsar researchers now are poised to learn otherwise-unavailable details of nuclear physics to test general relativity in conditions of extremely strong gravity, and to directly detect gravitational waves with a “telescope” nearly the size of our galaxy. Neutron stars are the remnants of massive stars that exploded as supernovae. They pack more than the mass of the Sun into a sphere no larger than a medium-sized city, making them the densest objects in...
  • Dave Says: Here's the Reason I'm on the Planet

    03/13/2012 4:42:53 PM PDT · by Altariel · 3 replies
    Townhall.com ^ | March 13, 2012 | Dave Ramsey
    Dear Dave, I was wondering why you recommend doing a fresh budget every month. Once you’ve figured out your expenses and income, won’t the same budget work month to month? Kara Dear Kara, I understand what you’re saying, but if you look closely at every month, you’ll see pretty quickly that they’re not all created equal in terms of expenses. On top of that, if you work a commission-based job, your monthly income will fluctuate throughout the year. Now, there are some things that will remain pretty standard. A few things like your rent or mortgage payment will probably be...
  • Weight gravity experiment

    10/02/2011 11:04:38 AM PDT · by plenipotentiary · 15 replies
    Myself ^ | October 2nd 2011 | Myself
    Could anyone interested in weight and gravity do the following experiment and post the results back on here in pounds. Weigh yourself at the middle of your ground floor, weigh yourself again immediately outside your building, and then again finally back at the middle of your ground floor. Thanks in advance. Mark
  • Experiments Show Gravity Is Not an Emergent Phenomenon

    08/24/2011 2:52:57 PM PDT · by Red Badger · 144 replies
    MIT Technology Review ^ | 08/24/2011 | Staff
    The way gravity effects quantum particles proves that it cannot be an emergent phenomenon, says physicist. One of the most exciting ideas in modern physics is that gravity is not a traditional force, like electromagnetic or nuclear forces. Instead, it is an emergent phenomenon that merely looks like a traditional force. This approach has been championed by Erik Verlinde at the University of Amsterdam who put forward the idea in 2010. He suggested that gravity is merely a manifestation of entropy in the Universe, which always increases according to the second law of thermodynamics. This causes matter distribute itself in...
  • Progress Toward the Dream of Space Drives and Stargates

    05/23/2011 5:02:27 PM PDT · by LibWhacker · 17 replies
    Centauri Dreams ^ | 5/23/11 | Paul Gilster
    Progress Toward the Dream of Space Drives and Stargates by Paul Gilster on May 23, 2011 by James F. WoodwardI first wrote about James Woodward’s work in my 2004 book Centauri Dreams: Imagining and Planning Interstellar Exploration, and have often been asked since to comment further on his research. But it’s best to leave that to the man himself, and I’m pleased to turn today’s post over to him. A bit of biography: Jim Woodward earned bachelor’s and master’s degrees in physics at Middlebury College and New York University (respectively) in the 1960s. From his undergraduate days, his chief...
  • 'Free-floating' planets found with no star in sight

    05/19/2011 12:23:55 PM PDT · by NYer · 25 replies
    BBC ^ | May 18, 2011 | Neil Bowdler
    An international team of astronomers claim to have found free-floating "planets" which do not seem to orbit a star.Writing in Nature, they say they have found 10 Jupiter-sized objects which they could not connect to any solar system. They also believe such objects could be as common as stars are throughout the Milky Way. The objects revealed themselves by bending the light of more distant stars, an effect called "gravitational microlensing".Objects of large enough mass can bend light, as Albert Einstein predicted. If a large object passes in front of a more distant background star, it may act as a...