Telescope On The Moon


	Telescope On The Moon

kidora

6-21-2007 2:48 PM

341 views

tags:

moon, telescope, science, space, galaxies

kidora says:

Liquid telescopes are amazing technology. If used correctly they would be able to show us images from distant galaxies that were born only a billion years after the formation of the universe.
Cool.

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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/266234d5-d377-4604-a677-26f089646827/208D0D4B-AEDB-4D30-8E49-20F16FB4CFCA/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://www.sciam.com/article.cfm?chanID=sa003&articleID=4A58D50D-E7F2-99DF-3223548BB53CD947&ref=rss" href="http://www.sciam.com/article.cfm?chanID=sa003&articleID=4A58D50D-E7F2-99DF-3223548BB53CD947&ref=rss" style="font-size: 11px;">www.sciam.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.sciam.com/article.cfm?chanID=sa003&articleID=4A58D50D-E7F2-99DF-3223548BB53CD947&ref=rss">
The idea of a moon-based liquid telescope is controversial, but it could help astronomers solve the central problem in constructing more powerful telescopes—the need for larger focusing mirrors. The Hubble Space Telescope has a 2.4-meter- (94-inch-) wide mirror, and its proposed successor, the James Webb Space Telescope, would have a 6.5-meter mirror. The largest mirrors, which reside in the twin telescopes of Hawaii's Keck Observatory, each measure 10 meters across.
<P>But astronomers would need a mirror up to 100 meters wide, or the length of a football field, to observe galaxies born nearly 13 billion years ago, when the universe was only one billion years old. Getting such an object into space would be a monumental undertaking, Borra says. "With a liquid mirror," he notes, "basically you carry it in a jug." Spinning the liquid in a large dish causes it to curve like a crater and focus light to a sharp image.</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.sciam.com/article.cfm?chanID=sa003&articleID=4A58D50D-E7F2-99DF-3223548BB53CD947&ref=rss"><div align="center"><img src="http://content6.clipmarks.com/blog_cache/www.sciam.com/img/A9065341-3A37-4B29-AEA4-A134EDA1E2F8" alt="Science Image: liquid mirror" /></div></blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/208D0D4B-AEDB-4D30-8E49-20F16FB4CFCA/blog/" title="blog or email this clip"><img src="http://content7.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>

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