<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/bcb7fe15-6aca-46e6-96be-4dc93eadc228/E65062FE-05BB-4EF8-95B0-69F51653BC0B/" 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.newscientist.com/article/mg20327266.100-too-much-radiation-for-astronauts-to-make-it-to-mars.html?DCMP=NLC-nletter&nsref=mg20327266.100" href="http://www.newscientist.com/article/mg20327266.100-too-much-radiation-for-astronauts-to-make-it-to-mars.html?DCMP=NLC-nletter&nsref=mg20327266.100" style="font-size: 11px;">www.newscientist.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.newscientist.com/article/mg20327266.100-too-much-radiation-for-astronauts-to-make-it-to-mars.html?DCMP=NLC-nletter&nsref=mg20327266.100"><H1> Too much radiation for astronauts to make it to Mars </H1></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.newscientist.com/article/mg20327266.100-too-much-radiation-for-astronauts-to-make-it-to-mars.html?DCMP=NLC-nletter&nsref=mg20327266.100"><div align="center"><img src="http://content6.clipmarks.com/blog_cache/www.newscientist.com/img/56518D2A-7D3F-4E21-98CE-5866C62EBF24" alt="A trip to Phobos comes with extras (Image: NASA/JPL)" /></div></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.newscientist.com/article/mg20327266.100-too-much-radiation-for-astronauts-to-make-it-to-mars.html?DCMP=NLC-nletter&nsref=mg20327266.100"><P class="lowlight">A trip to Phobos comes with extras (Image: NASA/JPL)</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.newscientist.com/article/mg20327266.100-too-much-radiation-for-astronauts-to-make-it-to-mars.html?DCMP=NLC-nletter&nsref=mg20327266.100"><P class="infuse">But the insidious threat of space radiation in the form of galactic cosmic rays could keep astronauts confined much closer to home.</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.newscientist.com/article/mg20327266.100-too-much-radiation-for-astronauts-to-make-it-to-mars.html?DCMP=NLC-nletter&nsref=mg20327266.100"><P class="infuse">The rays are actually speeding protons and heavier atomic nuclei that rain onto our solar system from all directions. They can <A href="http://www.newscientist.com/article/dn8669-protons-in-space-may-put-astronauts-dna-at-risk.html">slice through DNA molecules</A> when they pass through living cells and the resulting damage can lead to cancer.</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.newscientist.com/article/mg20327266.100-too-much-radiation-for-astronauts-to-make-it-to-mars.html?DCMP=NLC-nletter&nsref=mg20327266.100"><P class="infuse">Relatively lightweight aluminium or plastic shielding can block charged particles from the sun. But it would take impractically thick and heavy shields to stop the higher-energy galactic cosmic rays. "Shielding is not a solution to the risk problem," says Frank Cucinotta, chief scientist for radiation studies at NASA's Johnson Space Center in Houston, Texas.</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.newscientist.com/article/mg20327266.100-too-much-radiation-for-astronauts-to-make-it-to-mars.html?DCMP=NLC-nletter&nsref=mg20327266.100"><P class="infuse">Alternative technologies - which would generate <A href="http://www.newscientist.com/article/dn11623-deflector-shields-could-protect-future-astronauts.html">bubbles of plasma</A> that could protect spacecraft without adding much weight - are still at an early stage of development.</P></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/E65062FE-05BB-4EF8-95B0-69F51653BC0B/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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