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v. t. e. The Universal Transverse Mercator ( UTM) is a map projection system for assigning coordinates to locations on the surface of the Earth. Like the traditional method of latitude and longitude, it is a horizontal position representation, which means it ignores altitude and treats the earth surface as a perfect ellipsoid.
Comet Lovejoy is seen behind the yellow-green line of atmospheric airglow, which lies roughly at the boundary between outer space and Earth at an altitude of 100 km. Outer space (or simply space) is the expanse beyond celestial bodies and their atmospheres. It contains ultra-low levels of particle densities, constituting a near-perfect vacuum ...
A comet is a small body in the solar system that orbits the Sun and (at least occasionally) exhibits a coma (or atmosphere) and/or a tail — both primarily from the effects of solar radiation upon the comet's nucleus, which itself is a minor body composed of rock, dust, and ices. Comets' orbits are constantly changing: their origins are in the ...
Portal:Space/Intro/3 Space (or outer space) describes the vast empty regions between and around planets and stars. The study of these, and other, astronomical objects is called astronomy, one of the oldest sciences. It is often said that space exploration began with the launch of Sputnik 1, the first man-made object to orbit the Earth.
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The Space Exploration Portal. Space exploration is the endeavor of humans to use technology to reach, explore, and exploit the space outside the Earth 's atmosphere. It is generally based on the use of rockets to transport machines, animals, and humans to space. Objects launched into space may stay in orbit around Earth, travel in the space ...
The Space Portal Main Featured content Things you can do Topics Categories. Space. Aerospace ...
Space exploration is the endeavor of humans to use technology to reach, explore, and exploit the space outside the Earth's atmosphere. It is generally based on the use of rockets to transport machines, animals, and humans to space.