Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Outer_space> ?p ?o }
- Outer_space abstract "Outer space, or just space, is the void that exists between celestial bodies, including the Earth. It is not completely empty, but consists of a hard vacuum containing a low density of particles, predominantly a plasma of hydrogen and helium as well as electromagnetic radiation, magnetic fields, neutrinos, dust and cosmic rays. The baseline temperature, as set by the background radiation from the Big Bang, is 2.7 kelvins (K) (−270.45 °C; −454.81 °F). Plasma with a number density of less than one hydrogen atom per cubic metre and a temperature of millions of kelvins in the space between galaxies accounts for most of the baryonic (ordinary) matter in outer space; local concentrations have condensed into stars and galaxies. In most galaxies, observations provide evidence that 90% of the mass is in an unknown form, called dark matter, which interacts with other matter through gravitational but not electromagnetic forces. Data indicates that the majority of the mass-energy in the observable universe is a poorly understood vacuum energy of space which astronomers label dark energy. Intergalactic space takes up most of the volume of the Universe, but even galaxies and star systems consist almost entirely of empty space.There is no firm boundary where space begins. However the Kármán line, at an altitude of 100 km (62 mi) above sea level, is conventionally used as the start of outer space in space treaties and for aerospace records keeping. The framework for international space law was established by the Outer Space Treaty, which was passed by the United Nations in 1967. This treaty precludes any claims of national sovereignty and permits all states to freely explore outer space. Despite the drafting of UN resolutions for the peaceful uses of outer space, anti-satellite weapons have been tested in Earth orbit.Humans began the physical exploration of space during the 20th century with the advent of high-altitude balloon flights, followed by manned rocket launches. Earth orbit was first achieved by Yuri Gagarin of the Soviet Union in 1961 and unmanned spacecraft have since reached all of the known planets in the Solar System. Due to the high cost of getting into space, manned spaceflight has been limited to low Earth orbit and the Moon.Outer space represents a challenging environment for human exploration because of the dual hazards of vacuum and radiation. Microgravity also has a negative effect on human physiology that causes both muscle atrophy and bone loss. In addition to these health and environmental issues, the economic cost of putting objects, including humans, into space is high; in 1969, the Apollo program cost approximately $24,000,000,000 ($395,000,000,000 as of 2015).".
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- Outer_space wikiPageWikiLink 61_Cygni.
- Outer_space wikiPageWikiLink Absorption_(electromagnetic_radiation).
- Outer_space wikiPageWikiLink Acceleration.
- Outer_space wikiPageWikiLink Aether_(classical_element).
- Outer_space wikiPageWikiLink Age_of_the_universe.
- Outer_space wikiPageWikiLink Air_embolism.
- Outer_space wikiPageWikiLink Albert_Einstein.
- Outer_space wikiPageWikiLink Alexander_von_Humboldt.
- Outer_space wikiPageWikiLink Ancient_Greece.
- Outer_space wikiPageWikiLink Andromeda_Galaxy.
- Outer_space wikiPageWikiLink Anti-satellite_weapon.
- Outer_space wikiPageWikiLink Apollo_8.
- Outer_space wikiPageWikiLink Apsis.
- Outer_space wikiPageWikiLink Arabidopsis_thaliana.
- Outer_space wikiPageWikiLink Arc_welding.
- Outer_space wikiPageWikiLink Aristotle.
- Outer_space wikiPageWikiLink Armstrong_limit.
- Outer_space wikiPageWikiLink Arthur_Eddington.
- Outer_space wikiPageWikiLink Asteroid_mining.
- Outer_space wikiPageWikiLink Astronaut.
- Outer_space wikiPageWikiLink Astronomer.
- Outer_space wikiPageWikiLink Astronomical_object.
- Outer_space wikiPageWikiLink Astronomical_unit.
- Outer_space wikiPageWikiLink Astronomy.
- Outer_space wikiPageWikiLink Atmosphere.
- Outer_space wikiPageWikiLink Atmosphere_of_Earth.
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- Outer_space wikiPageWikiLink Atomic_nucleus.
- Outer_space wikiPageWikiLink Aurora.
- Outer_space wikiPageWikiLink BIOPAN.
- Outer_space wikiPageWikiLink Bacillus_subtilis.
- Outer_space wikiPageWikiLink Balloon_(aeronautics).
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- Outer_space wikiPageWikiLink Baryon.
- Outer_space wikiPageWikiLink Big_Bang.
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- Outer_space wikiPageWikiLink Bow_shocks_in_astrophysics.
- Outer_space wikiPageWikiLink Brazil.
- Outer_space wikiPageWikiLink Cancer.
- Outer_space wikiPageWikiLink Carbon_monoxide.
- Outer_space wikiPageWikiLink Category:Articles_in_Wikipedia_Primary_School_Project_SSAJRP.
- Outer_space wikiPageWikiLink Category:Environments.
- Outer_space wikiPageWikiLink Category:Extragalactic_astronomy.
- Outer_space wikiPageWikiLink Category:Intergalactic_media.
- Outer_space wikiPageWikiLink Category:Large-scale_structure_of_the_cosmos.
- Outer_space wikiPageWikiLink Category:Outer_space.
- Outer_space wikiPageWikiLink Category:Space_plasmas.
- Outer_space wikiPageWikiLink Category:Vacuum.
- Outer_space wikiPageWikiLink Centrifugal_force.
- Outer_space wikiPageWikiLink Centripetal_force.
- Outer_space wikiPageWikiLink Cepheid_variable.
- Outer_space wikiPageWikiLink Charles_Édouard_Guillaume.
- Outer_space wikiPageWikiLink Circulatory_system.
- Outer_space wikiPageWikiLink Colombia.
- Outer_space wikiPageWikiLink Communications_satellite.
- Outer_space wikiPageWikiLink Constellation.
- Outer_space wikiPageWikiLink Corona.
- Outer_space wikiPageWikiLink Cosmic_background_radiation.