Difference between revisions of "April 25, 2009"
(Created page with "__NOTOC__ =Twin Crescents, Critical Observation= <!-- ws:start:WikiTextHeadingRule:2:<h1> --> <!-- ws:start:WikiTextLocalImageRule:8:<img src="/file/view/LPOD...") |
(No difference)
|
Revision as of 15:13, 1 January 2015
Twin Crescents, Critical Observation
image by Jorge Figueroa, Guatemala City, Guatemala
In 1610 when Galileo made humanity's first telescopic observation of Venus he followed the planet long enough to see it change its shape. He realized that it was exhibiting phases, just as the Moon does. This was perhaps Galileo's most important discovery for solar system science because it disproved the Ptolemaic theory that Venus was always between Earth and Sun. Galileo recognized from his discovery of Chuck Wood
- Tycho's theory of the solar system was wrong, but in it Venus showed phases.
Technical Details
This is the first LPOD from Guatemala!
April 22, 2009, 5:33. Canon XTi, 1/80sec, ISO 200, prime focus at Takahashi FS 78 Refractor.
COMMENTS?
Click on this icon File:PostIcon.jpg at the upper right to post a comment.
