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
What the....You Mean I Can't Sing?! a trio of experimental albums, "Brer Soul", "Ain't Supposed to Die a Natural Death" and "As Serious as a Heart-Attack", which were considered to be spoken word at the time, due to their use of sprechgesang. Modern critics have since dubbed these albums as precursors to hip hop music. Van Peebles wanted to record an album that showed that he could perform in a more traditional form, as opposed to the style he had used on his previous albums, titling it "What the...You Mean I Can't Sing?!" because of this. "What the...You Mean I Can't Sing?!" places more emphasis on