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This is because the distance between Earth and the Sun is not fixed (it varies between 0.983 289 8912 and 1.016 710 3335 au) and, when Earth is closer to the Sun , the Sun's gravitational field is stronger and Earth is moving faster along its orbital path. As the metre is defined in terms of the second and the speed of light is constant for all ...
The AU has a peacekeeping mission in Somalia, consisting of troops from Uganda and Burundi. [13] The AU has adopted a number of important new documents establishing norms at continental level, to supplement those already in force when it was created.
The African and Malagasy Union (AMU) or the Union Africaine et Malgache (UAM) in French was a former intergovernmental organization created to promote cooperation among its members. The organization derives its name from the name of the continent of Africa and from the former Malagasy Republic, now Madagascar.
It was also contacted in 2003 when it was a distance of 7.6 billion miles from Earth (82 AU), but no instrument data about the solar wind was returned then. [ 68 ] [ 69 ] Voyager 1 surpassed the radial distance from the Sun of Pioneer 10 at 69.4 AU on 17 February 1998, because it was traveling faster, gaining about 1.02 AU per year. [ 70 ]
Earth (0.98–1.02 AU) [D 6] is the only place in the universe where life and surface liquid water are known to exist. [102] Earth's atmosphere contains 78% nitrogen and 21% oxygen, which is the result of the presence of life. [103] [104] The planet has a complex climate and weather system, with conditions differing drastically between climate ...
The Assembly of the African Union, which is formally known as the African Union Assembly of Heads of State and Government (AU-AHSG), is one of several decision-making bodies within the African Union. The other bodies are the Pan-African Parliament ; the Executive Council , consisting of foreign ministers of the AU members states; and the ...
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Hartree defined units based on three physical constants: [1]: 91 Both in order to eliminate various universal constants from the equations and also to avoid high powers of 10 in numerical work, it is convenient to express quantities in terms of units, which may be called 'atomic units', defined as follows: