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7 godz. temu · 14.2 Observation tools. ... (90–168 AD) greatly improved on the numbers of Aristarchus, calculating a mean distance of 59 times Earth's radius and a diameter of 0.292 Earth diameters, close to the correct values of about ... China continued its lunar program in 2010 with Chang'e 2, mapping the surface at a higher resolution over an eight ...
1 dzień temu · Riverside is a city in and the county seat of Riverside County, California, United States, in the Inland Empire metropolitan area. It is named for its location beside the Santa Ana River. It is the most populous city in the Inland Empire and in Riverside County, and is about 50 miles (80 km) southeast of downtown Los Angeles.It is also part of the Greater Los Angeles area.
