Inspired by Lautlos from Feedmee (vimeo.com/10458544) and the movie Inception.
Tag Archives | Gravity
Astronomers at Queen’s University Belfast have discovered an unbound star, US708, that is traveling at 1,200 kilometres per second. This is the fastest speed ever recorded in our galaxy.
The star is not bound by gravity and will eventually leave our galaxy. It is assumed that US708 was originally part of a “double-star” system, which included a massive white dwarf star. Presumably, the white dwarf exploded into a “thermonuclear supernovae,” or “type Ia supernova,” which kicked US708 out of orbit. A Type Ia Supernova occurs when two stars orbit each other “in which one of the stars is a white dwarf while the other can vary from a giant star to an even smaller white dwarf.”
Despite breaking a galactic record, the discovery of “US708 sheds light on the mysterious double-star systems that give rise to thermonuclear explosions. Thermonuclear, or ‘type Ia’, supernovae have long been used to calculate the distances to faraway galaxies – a measurement which helps to determine how the universe is changing and expanding.”
European Southern Observatory fellow, Stephan Geier, who led the study, said: “Several types of stars have been suspected of causing the explosion of a white dwarf as supernova of type Ia.… Read the rest
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A century ago this year, a young Swiss physicist, who had already revolutionized physics with discoveries about the relationship between space and time, developed a radical new understanding of gravity.
In 1915, Albert Einstein published his general theory of relativity, which described gravity as a fundamental property of space-time. He came up with a set of equations that relate the curvature of space-time to the energy and momentum of the matter and radiation that are present in a particular region.
Today, 100 years later, Einstein’s theory of gravitation remains a pillar of modern understanding, and has withstood all the tests that scientists could throw at it. But until recently, it wasn’t possible to do experiments to probe the theory under extreme conditions to see whether it breaks down.
Brink is a minimalist romance amidst floating objects – a love story eloquently framed by a futuristic catastrophe. What would happen if we slowly lost gravity on Earth? Who would you tie yourself to?
Abby Martin’s exclusive interview with former NASA Astronaut and ISS Commander, Leroy Chiao, about US-Russian cooperation in space, life on other words and the reality of the film ‘Gravity’.
Coincidence Control Network: File #054 – Attack of the Modern Caveman
This week: Pussy Riot update, the slow television of Norway, Detroit bark city?, Matt Forney is a massive dick-bag, Dark Wallet and BitCoin: a good idea?, and a Canadian Astronaut snorts at Hollywood.
- Pussy Riot Hunger Strike – Link
- Norway does TV…wrong – Link
- Investor to Create a Forest in Detroit – Link
- Matt Forney – Modern Caveman – Link
- Dark wallet – Link
- Canadian Astronaut booted out of screening of Gravity for heckling – Link
Wondering if it is possible to experience outer space life here on Earth? Via Interweb3000, a photo series cataloging training for NASA astronauts in the mid-1960s:
I’ve browsed back a bit in the NASA photo archives and put together a couple of photos that have emerged of the 1960s as part of the Apollo program in the Lunar Landing Research Facility. The photographs show, as were then tested with very simple methods, the effects of weightlessness on the human body in a moon walk – of course, could also be filming the big moon landing conspiracy.
Back in 2006, the Catalina Sky Survey in Arizona noticed that a mysterious body had begun orbiting the Earth. This object had a spectrum that was remarkably similar to the titanium white paint used on Saturn V rocket stages and, indeed, a number of rocket stages are known to orbit the Sun close to Earth. But this was not an object of ours. Instead, 2006 RH120, as it became known, turned out to be a tiny asteroid just a few metres across--a natural satellite like the Moon. It was captured by Earth's gravity in September 2006 and orbited us until June 2007 when it wandered off into the Solar System in search of a more interesting neighbour. 2006 RH120 was the first reliably documented example of a temporary moon ...
Michael Reilly reports in the New Scientist:
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An asteroid 300 metres in diameter is stalking the Earth. Hiding in the pre-dawn twilight, it has marched in lockstep with our planet for years, all but invisible to our telescopes.
The rock is Earth’s first confirmed Trojan, which can orbit the sun in either of two gravitational wells along the same orbital path as our planet. From the sun’s point of view, these wells lie 60 degrees ahead of and behind the Earth, at Lagrange points where gravitational forces between the sun and the Earth balance out.
Trojans are common — Jupiter alone boasts about 5000, and Neptune and Mars each have their own smaller collections. But finding Earth’s has proven difficult, because the Lagrange points lie towards the sun in the sky. Astronomers must look for the objects just before the sun rises or after it sets, and until now the glare of this sunlight has obscured the feeble light reflected from any rocks that might be hiding there.
Ah, now we know why the Doctor visits our planet so often. Via NASA’s website:
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Einstein was right again. There is a space-time vortex around Earth, and its shape precisely matches the predictions of Einstein’s theory of gravity.
Researchers confirmed these points at a press conference today at NASA headquarters where they announced the long-awaited results of Gravity Probe B (GP-B).
“The space-time around Earth appears to be distorted just as general relativity predicts,” says Stanford University physicist Francis Everitt, principal investigator of the Gravity Probe B mission.
“This is an epic result,” adds Clifford Will of Washington University in St. Louis. An expert in Einstein’s theories, Will chairs an independent panel of the National Research Council set up by NASA in 1998 to monitor and review the results of Gravity Probe B. “One day,” he predicts, “this will be written up in textbooks as one of the classic experiments in the history of physics.”
Time and space, according to Einstein’s theories of relativity, are woven together, forming a four-dimensional fabric called “space-time.” The mass of Earth dimples this fabric, much like a heavy person sitting in the middle of a trampoline.