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The symbiotic relationship between a satellite and a helper virus to catalyze the replication of a satellite genome is also dependent on the host to provide components like replicases [4] to carry out replication. [5] A satellite virus of mamavirus that inhibits the replication of its host has been termed a virophage. [6]
The Tuvan People's Republic was proclaimed a nominally independent state in 1921, although it was tightly controlled by Moscow and is considered a satellite state of the Soviet Union until 1944, when the USSR annexed it into the Russian SFSR. [9] Another early Soviet satellite state in Asia was the short-lived Far Eastern Republic in Siberia. [9]
The name "satellite DNA" refers to the phenomenon that repetitions of a short DNA sequence tend to produce a different frequency of the bases adenine, cytosine, guanine, and thymine, and thus have a different density from bulk DNA such that they form a second or "satellite" band(s) when genomic DNA is separated along a cesium chloride density ...
The habitability of natural satellites is the potential of moons to provide habitats for life, though it is not an indicator that they harbor it.Natural satellites are expected to outnumber planets by a large margin and the study of their habitability is therefore important to astrobiology and the search for extraterrestrial life.
The English proper name for Earth's natural satellite is typically written as Moon, with a capital M. [19] [20] The noun moon is derived from Old English mōna, which stems from Proto-Germanic *mēnōn, [21] which in turn comes from Proto-Indo-European *mēnsis 'month' [22] (from earlier *mēnōt, genitive *mēneses) which may be related to the verb 'measure' (of time).
The name derives from the small chromosomal segment behind the secondary constriction, called a satellite, named by Sergei Navashin, in 1912. [5] Later, Heitz (1931) qualified the secondary constriction as the SAT state ( Sine Acido Thymonucleinico , which means "without thymonucleic acid"), because it didn't stain with the Feulgen reaction .
The satellite unit of Elon Musk's SpaceX has secured a permit to operate in Indonesia, the communications minister told Reuters on Wednesday. Starlink had obtained a permit to operate as an ...
The first artificial satellite launched into the Earth's orbit was the Soviet Union's Sputnik 1, on October 4, 1957. As of December 31, 2022, there are 6,718 operational satellites in the Earth's orbit, of which 4,529 belong to the United States (3,996 commercial), 590 belong to China, 174 belong to Russia, and 1,425 belong to other nations. [1]