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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.
For more information about Space, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
News tagged with space
Hubble Finds Smallest Kuiper Belt Object Ever Seen
Space & Earth / Space Exploration
6 hours ago |
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(PhysOrg.com) -- NASA's Hubble Space Telescope has discovered the smallest object ever seen in visible light in the Kuiper Belt, a vast ring of icy debris that is encircling the outer rim of the solar system ...
Herschel Space Telescope uncovers the sources of the Cosmic Infrared Background
7 hours ago |
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(PhysOrg.com) -- Using first observations with the PACS Instrument on board ESA’s Herschel Space Telescope, scientists from the Max Planck Institute for Extraterrestrial Physics and other institutions have ...
Mid-Century Model Homes Helped Shape Domestic Ideals
13 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
15 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 ...
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Taiwan unveils super-tiny microchip
15 hours ago |
4.8 / 5 (4) |
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Taiwan has developed tiny microchips that could lead to lighter and cheaper laptops or mobile phones, researchers and observers said Wednesday.
Gaia star mapper to lift off from Europe's Spaceport on a Soyuz launcher
Space & Earth / Space Exploration
14 hours ago |
5 / 5 (2) |
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(PhysOrg.com) -- Gaia, ESA's next-generation star mapper, will be carried into space by a Soyuz-STB/Fregat launch vehicle from Europe's Spaceport in French Guiana. David Southwood, ESA's Director of Science ...
Black Holes in Star Clusters stir up Time and Space (w/ Video)
14 hours ago |
4.8 / 5 (12) |
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(PhysOrg.com) -- Within a decade scientists could be able to detect the merger of tens of pairs of black holes every year, according to a team of astronomers at the University of Bonn’s Argelander-Institut ...
Scientists Shed New Light On Right Brain Activity
Medicine & Health / Neuroscience
3 hours ago |
4 / 5 (1) |
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It’s a world first: thanks to new technology developed by the University of Victoria, Canada, researchers can now show how multiple parts of the right brain dynamically process spatial relationships.
NASA unveils latest results from lunar mission
Space & Earth / Space Exploration
Dec 15, 2009 |
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NASA's current mission in orbit around the moon, the Lunar Reconnaissance Orbiter, or LRO, has been providing crucial insights about our nearest celestial neighbor since its launch in June. At a scientific ...
Astronomers Find Super-Earth Using Amateur, Off-the-Shelf Technology (w/ Video)
8 hours ago |
5 / 5 (9) |
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(PhysOrg.com) -- Astronomers announced today that they have discovered a "super-Earth" orbiting a red dwarf star 40 light-years from Earth. They found the distant planet with a small fleet of ground-based ...
Caltech scientists film photons with electrons
9 hours ago |
4.9 / 5 (15) |
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(PhysOrg.com) -- Techniques recently invented by researchers at the California Institute of Technology -- which allow the real-time, real-space visualization of fleeting changes in the structure of nanoscale ...
Unique 'Climate One Stop' Web Site Unveiled in Copenhagen
Dec 15, 2009 |
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There's a storm brewing -- a storm of information, that is, in climate and environmental research. People are wading through the turbulence, trying to make sense of it all.
Icy moons of Saturn and Jupiter may have conditions needed for life
Dec 15, 2009 |
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(PhysOrg.com) -- Scientists once thought that life could originate only within a solar system's "habitable zone," where a planet would be neither too hot nor too cold for liquid water to exist on its surface. ...
YouTube leads Google charge in display ad market
Dec 15, 2009 |
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Google on Tuesday outlined a strategy for seizing a bigger share of online display advertising that has long been a key stronghold for rival Yahoo!
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