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15 hours ago · t. e. Space exploration is the use of astronomy and space technology to explore outer space. [1] While the exploration of space is currently carried out mainly by astronomers with telescopes, its physical exploration is conducted both by uncrewed robotic space probes and human spaceflight. Space exploration, like its classical form astronomy ...
15 hours ago · An artist's conception of a super-Earth, which is a rocky world more massive than our planet. Credit: NASA On a large, rocky world in a far-off solar system, a year goes by in just half a day ...
15 hours ago · t. e. The cosmic microwave background ( CMB or CMBR) is microwave radiation that fills all space in the observable universe. It is a remnant that provides an important source of data on the primordial universe. [1] With a standard optical telescope, the background space between stars and galaxies is almost completely dark.
15 hours ago · The first satellites designed for long term observation of the Sun from interplanetary space were NASA's Pioneers 6, 7, 8 and 9, which were launched between 1959 and 1968. These probes orbited the Sun at a distance similar to that of Earth, and made the first detailed measurements of the solar wind and the solar magnetic field.
15 hours ago · Wernher Magnus Maximilian Freiherr von Braun ( US: / ˌvɜːrnər vɒn ˈbraʊn / VUR-nər von BROWN, German: [ˌvɛʁnheːɐ̯ fɔn ˈbʁaʊ̯n]; 23 March 1912 – 16 June 1977) was a German-American aerospace engineer [3] and space architect. He was a member of the Nazi Party and Allgemeine SS, the leading figure in the development of rocket ...
15 hours ago · In the absence of a magnetic field, charged particles from the Sun will deplete the atmosphere and further increase the Earth's temperature to an average of around 420 K (147 °C, 296 °F) in 2.8 billion years, causing the last remaining life on Earth to die out. This is the most extreme instance of a climate-caused extinction event.
15 hours ago · Cold War 12 March 1947 – 26 December 1991 (44 years and 9 months) Part of the post-World War II era NATO and Warsaw Pact states during the Cold War era The "Three Worlds" of the Cold War era, between 30 April and 24 June 1975: First World: Western Bloc led by the United States and its allies Second World: Eastern Bloc led by the Soviet Union, China (Independent), and their allies Third World ...
