Geocentric model explanation in terms of the Earth's revolution about the sun. In 1838, astronomer Friedrich Wilhelm Bessel measured the parallax of the star 61 Cygni successfully, and disproved Ptolemy's claim that parallax motion did not exist. This finally confirmed the assumptions made by Copernicus, providing accurate, dependable scientific observations, and conclusively displaying how distant stars are from Earth. A geocentric frame is useful for many everyday activities and most laboratory experiments, but is a less appropriate choice for solar system mechanics and space travel. While a heliocentric frame is most useful in those cases, galactic and extragalactic astronomy is easier if
The Places in Between The Places in Between "The Places in Between" is a travel narrative by British writer and Member of Parliament Rory Stewart, detailing his solo walk across north-central Afghanistan in 2002. Stewart arrives in Afghanistan in January 2002, beginning his journey in Herat and proceeding on foot to Kabul. He is initially accompanied by two armed guards, Qasim and Abdul Haq, at the insistence of Governor Yuzufi but travels without human company for most of his walk, accompanied only by his dog, Babur. On his journey, Stewart encounters many of Afghanistan’s most notable historical sites, including the Minaret of Jam, the