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 -
Art forgeries have long been the stuff of thrillers, with fake da Vincis or Vermeers fooling connoisseurs, roiling the art world, and moving millions of dollars.
We don’t think of ancient books driving such grand forgery, intrigue, and schadenfreude. This is changing thanks in part to a clever forgery of Galileo’s landmark book Sidereus Nuncius, published in Venice in 1610. Arguably one of the most extraordinary scientific publications of all times, Sidereus Nuncius turned Galileo into the brightest new star of Western science. Four centuries later, a faked copy of this book has disarmed a generation of Galileo experts, and raised a host of intriguing questions about the social nature of scholarly authentication, the precariousness of truth, and the revelatory power of fakes.
posted by whyareyouatriangle
on Jul 9, 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 -
When it first surfaced in 2005, it was hailed as 'the most important Galileo find in more than a century'
. Then, in June 2012, news broke on the Ex Libris mailing list
that the unique 'proof copy' of Galileo's Sidereus Nuncius
containing his original drawings of the Moon was in fact a highly sophisticated forgery
. The full story is still unclear, but the finger of suspicion points at Marino Massimo de Caro
, who in his brief reign as director of the Girolamini Library
in Naples removed thousands of rare books
in what has been described as a 'premeditated, organised and brutal'
sacking of the library. Meanwhile, experts are still marvelling at the quality of the forgery: "We’ve seen missing pages replaced in facsimile, but no one dreamed that an entire book could be forged, something that is now more easily possible because of modern technology."
posted by verstegan
on Apr 4, 2013 -
Croatian software developer and amateur image processor Gordan Ugarković
takes images from NASA's unmanned space probes released to the Planetary Data System
, splices them together and tweaks the colors, sometimes combining higher resolution black and white images with color images, sometimes recreating what the object would look like in natural color (ie, in visible wavelengths, from images taken in multiple wavelengths), sometimes heightening the contrast to bring out detail. (via
) [more inside]
posted by nangar
on May 20, 2011 -
Saturn's enigmatic moon Titan
holds on to its mysteries. Radar images
reveal quite a bit of variation but no clear interpretation. The hazy atmosphere prevents the sudden shock of discovery that characterized the Voyager and Galileo flybys of the moons of Jupiter, revealing little more than fuzzy Rorschach blobs.
With less than 1% of the surface mapped, researchers suspect that Titan has a young surface
shaped by processes that have yet to be revealed.
posted by KirkJobSluder
on Nov 5, 2004 -
In case you've been wondering about Europe's nascent GPS system, the Economist has an update.
posted by kliuless
on Jan 29, 2004 -
NASA's Official 'Galileo Dies' Page.
Galileo is set to crash into Jupiter on Sunday. Responsible for many great images
and tons of information, Galileo served well. Find a complete history of the Galileo mission here
. Also, don't forget to watch the End of Mission webcast this Sunday at approx. 2 PM EST here
posted by Ufez Jones
on Sep 16, 2003 -
Swan song for a great explorer.
Tomorow, the Galileo explorer will make a flyby of Jovian moon Amalthea
ending pehaps the geatest unmanned mission in NASA history. Galileo telemetry may not survive the flyby having already receieved much more radiation than it was designed for. Even if it does survive, this will be its final orbit scheduled to crash into Jupiter in September of next year. In spite of antenna difficulties, the spacecraft returned many beautiful images
of Jupiter's moons, along with coverage of the Shoemaker-Levy collision
and the first atmospheric probe to decend into Jupiter's weather.
posted by KirkJobSluder
on Nov 3, 2002 -