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Phobos is named after the Greek god of fear and panic, who is the son of Ares (Mars) and twin brother of Deimos. Phobos is a small, irregularly shaped object with a mean radius of 11 km (7 mi). It orbits 6,000 km (3,700 mi) from the Martian surface, closer to its primary body than any other known natural satellite to a planet.
The timeline of discovery of Solar System planets and their natural satellites charts the progress of the discovery of new bodies over history. Each object is listed in chronological order of its discovery (multiple dates occur when the moments of imaging, observation, and publication differ), identified through its various designations (including temporary and permanent schemes), and the ...
The first European to see Texas was Alonso Álvarez de Pineda, who led an expedition for the governor of Jamaica, Francisco de Garay, in 1520.While searching for a passage between the Gulf of Mexico and Asia, [17] Álvarez de Pineda created the first map of the northern Gulf Coast. [18]
Asaph Hall III (October 15, 1829 – November 22, 1907) was an American astronomer who is best known for having discovered the two moons of Mars, Deimos and Phobos, in 1877. [1] He determined the orbits of satellites of other planets and of double stars , the rotation of Saturn , and the mass of Mars.
(Credit: University of North Texas / Portal to Texas History) Civil rights victory 70 years ago In 2024, the landmark Brown vs. Board of Education case is likely to be in the forefront of civil ...
The Texas Almanac is a biennially published reference work providing information for the general public on the history of the US state of Texas and its people, government and politics, economics, natural resources, holidays, culture, education, recreation, the arts, and other topics.
The timeline begins at the Bronze Age, as it is difficult to give even estimates for the timing of events prior to this, such as of the discovery of counting, natural numbers and arithmetic. To avoid overlap with timeline of historic inventions , the timeline does not list examples of documentation for manufactured substances and devices unless ...
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