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In 1919, an eclipse of the Sun first allowed astronomers to test Albert Einstein's theory of gravity, the general theory of relativity. Now, eclipses in a unique system of two dead stars, called pulsars, has shown that one of the pair is "wobbling" in space - just like a spinning top. The effect, called precession, is precisely as predicted by Einstein and is thus a new and exciting confirmation of his theory. picked by AutumnLotus 5 months ago tags eclipses prove einstein theory relativity stars |
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Astronomers have confirmed the binary nature of OJ 287, a very massive black hole, orbited by a smaller one, and the interaction of the system with its surroundings produces brightness changes that allow astronomers to study the evolution of the orbit. This evolution is dominated by one of the most intriguing predictions of Einstein's theory of General Relativity. Update on this post. picked by AutumnLotus 8 months ago 2 comments edit related share science |
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A $205 million upgrade will allow a laser-wielding observatory to monitor tens of thousands of galaxies for mysterious gravitational waves. Leading investigators are confident that the Advanced LIGO (Laser Interferometer Gravitational-wave Observatories) Project will be able for the first time to detect gravitational waves from neutron stars and black holes, as predicted by Einstein's theory of ge... read full post picked by AutumnLotus 8 months ago 0 comments edit related share science |
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Ninety years after he expounded his famous theory, a $700m Nasa probe has proved that the universe behaves as he said. Now the race is on to show that the other half of relativity also works. picked by AutumnLotus 2 years ago 4 comments edit related share science |
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A pair of pulsars two thousand light years away have confirmed Albert's theories. Well Einstein was right...hmm big surprise there. But cool at any rate! picked by Moe 1 year ago 1 comments edit related share plime.com |
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Einstein's predicted warping of space-time has been discovered around neutron stars, the most dense observable matter in the universe. picked by AutumnLotus 1 year ago 6 comments edit related share plime.com |
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A U.S.-led international team of scientists has reported preliminary evidence consistent with Einstein's disavowed theory of a force that opposes gravity. In 1917, Einstein proposed a cosmological constant -- a force opposing gravity -- to explain why the universe does not collapse under the force of gravity. At the time, Einstein and other scientists believed the universe was static. picked by AutumnLotus 1 year ago 2 comments edit related share science |
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While searching for an observational hint of quantum gravity, scientists have seen higher-energy gamma rays from an extragalactic flare arrive later than lower-energy ones. This is a problem because according to relativity radiation travels through the vacuum at the same speed no matter what. picked by 2manyusernames 1 year ago 3 comments edit related share science |
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Newborn stars peek out from beneath their natal blanket of dust in this dynamic image of the Rho Ophiuchi dark cloud from NASA's Spitzer Space Telescope. Called "Rho Oph" by astronomers, it's one of the closest star-forming regions to our own solar system. Located near the constellations Scorpius and Ophiuchus, the nebula is about 407 light years away from Earth. picked by AutumnLotus 10 months ago 0 comments edit related share science |
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Like a cosmic Grim Reaper, a blast of ultraviolet light signals the violent death of the universe's most massive stars. Now astronomers have viewed this heavenly harbinger for the first time. picked by AutumnLotus 6 months ago 0 comments edit related share science |
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Perhaps the first stars in the newborn universe did not shine, but instead were invisible “dark stars” 400 to 200,000 times wider than the sun and powered by the annihilation of mysterious dark matter. The study calculated how the birth of the first stars almost 13 billion years ago might have been influenced by the presence of dark matter – the unseen, yet-unidentified stuff tha... read full post picked by AutumnLotus 1 year ago 2 comments edit related share plime.com |
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Picture a cool place, teeming with a multitude of hot bodies twirling about in rapidly changing formations of singles and couples, partners and groups, constantly dissolving and reforming. If you were thinking of the dance floor in a modern nightclub, think again. It's a description of the shells around dying stars, the place where newly formed elements make compounds and life takes off. picked by AutumnLotus 1 year ago 3 comments edit related share plime.com |
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As white dwarfs form, they get a "kick" that propels them to speeds of thousands of miles per hour, new evidence from NASA's Hubble Space Telescope shows. Astronomers used Hubble's Advanced Camera for Surveys to look at the distribution of white dwarfs in the ancient globular cluster NGC 6397, a dense swarm of hundreds of thousands of stars. picked by AutumnLotus 1 year ago 0 comments edit related share plime.com |
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Invisible magnetic field lines twisted like long ropes of DNA help stars spiral into life. New stars form from enormous clouds of gas and dust collapse under their own gravity into dense spheres. The packed cores are ignited by thermonuclear reactions. As they collapse, the clouds rotate, and like an ice skater pulling in his arms while spinning, rotation speed increases as the collapsing cloud ge... read full post picked by AutumnLotus 1 year ago 0 comments edit related share plime.com |
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With the conventional theory of gravitation, based on Newton’s ideas and refined by Einstein 92 years ago, dark matter helps to explain the motion of galaxies, and clusters of galaxies, on the largest scales. Now two Canadian researchers suggest that the motion of galaxies in a distant cluster is more easily explained by a Modified Gravity (MOG) theory than by the presence of dark matter. picked by AutumnLotus 1 year ago 0 comments edit related share plime.com |
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Edwin Hubble once called IC 10 “one of the most curious objects in the sky,” and new observations of the extremely faint, lightweight dwarf galaxy are giving scientists new clues about how populations of stars are born. picked by AutumnLotus 1 year ago 0 comments edit related share plime.com |
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A man has come up with a new non-relativistic theory of gravity. picked by etag 1 year ago 2 comments edit related share plime.com |
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Planets may be present in a quadruple star system 150 light years from Earth, according to Spitzer Space Telescope observations. The system, called HD 98800, consists of two pairs of stars in which the partners in each pair orbit one another closely. The pairs themselves travel around each other on a very elongated path. picked by AutumnLotus 1 year ago 0 comments edit related share plime.com |
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Astronomers based at Jodrell Bank Observatory have found evidence that giant whirlpools form in the wake of stars as they move through clouds in interstellar space. picked by AutumnLotus 2 years ago 0 comments edit related share plime.com |
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A pair of newfound stars orbit each other so closely that they share material, taking on the appearance of a giant peanut in space. picked by AutumnLotus 8 months ago 0 comments edit related share science |
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Newborn stars shine like celestial sparklers in a new portrait of the nearby Triangulum Galaxy – the most detailed ultraviolet image of a galaxy ever taken. Astronomers will use the image, taken by NASA's Swift telescope, to create an "age map" of the galaxy's components to understand how galaxies evolve over time. picked by AutumnLotus 9 months ago 2 comments edit related share science |