In the seventeenth and eighteenth centuries it became possible to believe in the existence of life on other planets on scientific grounds. Once the Earth was no longer the center of the universe according to Copernicus, once Galileo had aimed his telescope at the Moon and found it a rough globe with mountains and seas, the assumption of life on other planets became much less far-fetched. In general there were no actual differences between Earth and Venus, since both planets orbited the Sun, were of similar size, and possessed mountains and an atmosphere. If there is life on Earth, one may ponder why it could not also exist on Venus. In the extraterrestrial life debate of the seventeenth and eighteenth centuries, the Moon, our closest celestial body, was the prime candidate for life on other worlds, although a number of scientists and scholars also speculated about life on Venus and on other planets, both within our solar system and beyond its frontiers. Venusians: the Planet Venus in the 18th-Century Extraterrestrial Life Debate
(PDF), from The Journal of Astronomical Data
(JAD) Volume 19
, somewhat via NPR
and their mention of amateur astronomer Thomas Dick's estimations of the populations of the other planets in our solar system
(Archive.org online view of Celestial scenery, or, The Wonders of the planetary system displayed
posted by filthy light thief
on Aug 21, 2014 -
The Great Ptolemaic Smackdown
is a nine-part series posted by sci-fi author and statistician Michael F. Flynn
to his blog last year, covering the historical conflict between heliocentrism and geocentrism, with a special focus on Galileo. They are based on an article (pdf)
by Flynn which originally appeared in the Jan/Feb 2013 issue of Analog
. [more inside]
posted by zarq
on Apr 8, 2014 -
The Flat Earth Society
considers the notion of a round earth to be a conspiracy. Flat earthers turn to the Bible
to support their claims. A map
of the flat earth (oddly similar to the UN logo
N is the central open sea, I, the circular wall or barrier of ice, L, the masses of land tending southwards, W, the "waters of the great deep," surrounding the land, S, the southern boundary of ice, and D, the outer gloom and darkness, in which the material world is lost to human perception.
A 3D view
of the Zetetic universe.
You know who else thought the earth was round?
posted by desjardins
on Sep 19, 2007 -
Did the roof of the Pantheon influence Copernicus?
Are the planets of the solar system aligned in accordance with a nearly-forgotten hypothesis known (unfairly) as Bode's Law
? A fascinating wide-ranging discussion on BLDGBLOG with Walter Murch
, the visionary editor and sound designer for such films as The Conversation, Apocalypse Now, The English Patient, THX1138,
and many others. [Murch's film work has previously been discussed here
posted by digaman
on Apr 7, 2007 -