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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.
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News tagged with space
Seattle team wins $900,000 in Space Elevator Games
Space & Earth / Space Exploration
17 hours ago |
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(AP) -- A Seattle team has collected a $900,000 prize in a NASA-backed competition to develop the concept of an elevator to space - an idea spurred by science fiction novels.
Station Prepares For New Spacecraft, Monitors Debris
Space & Earth / Space Exploration
Nov 06, 2009 |
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The station crew prepared Friday for the arrival of the Russian Mini-Research Module 2 (MRM2) which is scheduled for launch from the Baikonur Cosmodrome, Kazakhstan on Nov. 10. The MRM2 will arrive at the ...
Hylas payload shipped to India
Space & Earth / Space Exploration
Nov 06, 2009 |
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(PhysOrg.com) -- Hylas, a flexible, broadband Ka-band satellite, is steadily moving towards completion. The communications payload has been shipped from England to India for integration with the platform, ...
'Dropouts' pinpoint earliest galaxies
Nov 06, 2009 |
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Astronomers, conducting the broadest survey to date of galaxies from about 800 million years after the Big Bang, have found 22 early galaxies and confirmed the age of one by its characteristic hydrogen signature ...
Kepler Mission Update
Space & Earth / Space Exploration
Nov 06, 2009 |
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(PhysOrg.com) -- Kepler completed another science data download over October 18-19. In this download, a month's worth of science data was transmitted through the NASA Deep Space Network and into the Science ...
Scientists Reproduce a Building Block of Life in Laboratory
Nov 06, 2009 |
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(PhysOrg.com) -- NASA scientists studying the origin of life have reproduced uracil, a key component of our hereditary material, in the laboratory.
Tackling new Arctic challenges from space
Nov 05, 2009 |
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International scientists, researchers and decision makers met at the 'Space and the Arctic workshop' to identify the needs and challenges of working and living in the rapidly changing Arctic and to explore how space-based ...
Hubble Image Showcases Star Birth in M83, the Southern Pinwheel
Nov 05, 2009 |
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(PhysOrg.com) -- The spectacular new camera installed on NASA's Hubble Space Telescope during Servicing Mission 4 in May has delivered the most detailed view of star birth in the graceful, curving arms of ...
Space hotel taking bookings for 2012 opening
Space & Earth / Space Exploration
Nov 05, 2009 |
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(PhysOrg.com) -- The first orbiting space hotel is on track to open for its first customers in 2012, but hurry, as bookings are filling fast.
Success in 'space elevator' competition (Update 3)
Space & Earth / Space Exploration
Nov 05, 2009 |
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(AP) -- A robot powered by a ground-based laser beam climbed a long cable dangling from a helicopter on Wednesday to qualify for prize money in a $2 million competition to test the potential reality of the ...
Unsettled Youth: Spitzer Observes a Chaotic Planetary System
Nov 04, 2009 |
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(PhysOrg.com) -- Before our planets found their way to the stable orbits they circle in today, they wiggled and jostled about like unsettled children. Now, NASA's Spitzer Space Telescope has found a young ...
Rosetta's final Earth boost
Space & Earth / Space Exploration
Nov 04, 2009 |
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ESA's comet chaser Rosetta will swing by Earth for the last time on 13 November to pick up energy and begin the final leg of its 10-year journey to comet 67P/Churyumov-Gerasimenko. ESA's European Space Operations ...
SMOS forms three-pointed star in the sky (w/ Video)
Space & Earth / Space Exploration
Nov 03, 2009 |
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(PhysOrg.com) -- Following the launch of ESA's SMOS satellite on 2 November, the French space agency CNES, which is responsible for operating the satellite, has confirmed that the instrument's three antenna arms have ...
'Ultra-primitive' particles found in comet dust
Space & Earth / Space Exploration
Nov 02, 2009 |
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Dust samples collected by high-flying aircraft in the upper atmosphere have yielded an unexpectedly rich trove of relicts from the ancient cosmos, report scientists from the Carnegie Institution. The stratospheric ...
SMOS, Proba-2: Two new ESA satellites successfully lofted into orbit (w/ Video)
Space & Earth / Space Exploration
Nov 02, 2009 |
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(PhysOrg.com) -- The second satellite in ESA's Earth Explorer series - the Soil Moisture and Ocean Salinity (SMOS) mission - and the second demonstration satellite under ESA's Project for Onboard Autonomy ...
