Related topics: international space station , shuttle , space shuttle discovery , satellite , nasa
Space
hideSpace is the boundless, three-dimensional extent in which objects and events occur and have relative position and direction. Physical space is often conceived in three linear dimensions, although modern physicists usually consider it, with time, to be part of the boundless four-dimensional continuum known as spacetime. In mathematics spaces with different numbers of dimensions and with different underlying structures can be examined. The concept of space is considered to be of fundamental importance to an understanding of the universe although disagreement continues between philosophers over whether it is itself an entity, a relationship between entities, or part of a conceptual framework.
Many of the philosophical questions arose in the 17th century, during the early development of classical mechanics. In Isaac Newton's view, space was absolute - in the sense that it existed permanently and independently of whether there were any matter in the space. Other natural philosophers, notably Gottfried Leibniz, thought instead that space was a collection of relations between objects, given by their distance and direction from one another. In the 18th century, Immanuel Kant described space and time as elements of a systematic framework which humans use to structure their experience.
In the 19th and 20th centuries mathematicians began to examine non-Euclidean geometries, in which space can be said to be curved, rather than flat. According to Albert Einstein's theory of general relativity, space around gravitational fields deviates from Euclidean space. Experimental tests of general relativity have confirmed that non-Euclidean space provides a better model for explaining the existing laws of mechanics and optics.
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News tagged with space
Mid-Century Model Homes Helped Shape Domestic Ideals
6 hours ago |
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(PhysOrg.com) -- A University of Arkansas researcher examined trends in model houses in the post-World War II era and found that they represent a transformation in cultural and domestic life that continues to influence housing ...
NASA Buys Additional Space Shuttle Reusable Solid Rocket Motors
Space & Earth / Space Exploration
8 hours ago |
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(PhysOrg.com) -- NASA has purchased two reusable solid rocket motors from ATK Launch Systems Inc. of Brigham City, Utah, to provide a "launch on need" rescue capability for the final planned space shuttle mission, targeted ...
Hubble's Festive View of a Grand Star-Forming Region (w/ Video)
22 hours ago |
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(PhysOrg.com) -- Just in time for the holidays: a Hubble Space Telescope picture postcard of hundreds of brilliant blue stars wreathed by warm, glowing clouds. The festive portrait is the most detailed view of the largest ...
New planet discoveries suggest low-mass planets are common around nearby stars (w/ Video)
Dec 14, 2009 |
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(PhysOrg.com) -- An international team of planet hunters has discovered as many as six low-mass planets around two nearby Sun-like stars, including two "super-Earths" with masses 5 and 7.5 times the mass of ...
'Monster' iceberg shedding hundreds of offshoots
Space & Earth / Earth Sciences
Dec 14, 2009 |
4.6 / 5 (9) |
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An island-sized iceberg is breaking up as it drifts closer to Australia, producing hundreds of smaller slabs spread over a massive area of ocean, experts said Monday.
Born in beauty: Proplyds in the Orion Nebula (w/ Video)
Dec 14, 2009 |
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(PhysOrg.com) -- A collection of 30 never-before-released images of embryonic planetary systems in the Orion Nebula are the highlight of the longest single Hubble Space Telescope project ever dedicated to ...
Hubble's Deepest View of Universe Unveils Never-Before-Seen Galaxies (w/ Video)
Dec 08, 2009 |
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(PhysOrg.com) -- In 2004, Hubble created the Hubble Ultra Deep Field (HUDF), the deepest visible-light image of the Universe, and now, with its brand-new camera, Hubble is seeing even farther. This image was ...
Life on Mars theory boosted by new methane study
Space & Earth / Space Exploration
Dec 08, 2009 |
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Scientists have ruled out the possibility that methane is delivered to Mars by meteorites, raising fresh hopes that the gas might be generated by life on the red planet, in research published tomorrow in Earth an ...
Virgin Galactic unveils commercial spaceship
Space & Earth / Space Exploration
Dec 07, 2009 |
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SpaceShipTwo (SS2) and its mothership, VMS Eve (WhiteKnightTwo) herald a new era in commercial space flight with daily space tourism flights set to commence from Spaceport America in New Mexico after test ...
Newly discovered star one of hottest in Galaxy (w/ Video)
Dec 02, 2009 |
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(PhysOrg.com) -- Astronomers at The University of Manchester's Jodrell Bank Centre for Astrophysics have discovered one of the hottest stars in the Galaxy with a surface temperature of around 200,000 degrees ...
Superconductor magnet spacecraft heat shield being developed
Nov 26, 2009 |
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(PhysOrg.com) -- European space agencies and an aerospace giant are developing a new re-entry heat shield that will use superconductor magnets to generate a magnetic field strong enough to deflect the superhot ...
Galaxy Collision Switches on Black Hole
Dec 10, 2009 |
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(PhysOrg.com) -- This composite image of data from three different telescopes shows an ongoing collision between two galaxies, NGC 6872 and IC 4970.
The Energy Sources of Ultraluminous Galaxies
Nov 27, 2009 |
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(PhysOrg.com) -- Ultraluminous infrared galaxies ((ULIRGs) are galaxies whose luminosity exceeds that of a trillion suns; for comparison, the Milky Way galaxy has a typical (and much more modest) luminosity ...
Fermi Telescope Peers Deep into Microquasar (w/ Video)
Nov 27, 2009 |
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(PhysOrg.com) -- NASA's Fermi Gamma-ray Space Telescope has made the first unambiguous detection of high-energy gamma-rays from an enigmatic binary system known as Cygnus X-3. The system pairs a hot, massive ...
Japan's 'space beer' sparkles among drinkers
Space & Earth / Space Exploration
Dec 07, 2009 |
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A Japanese brewer has come up with a beer that's truly out of this world -- one made with barley grown from a line of seeds that once orbited the Earth aboard the International Space Station.
