Changes in Angular Mars


	Changes in Angular Mars

skwirlinator

7-15-2008 7:58 AM

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tags:

mars, space, view

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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://www.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/1d1fbe28-5991-4187-9b72-5ea733d47b6f/6AB650FA-45ED-45C5-AF96-CE3126B3D7E2/" 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.coolscifi.com/forums/showthread.php?t=198403" href="http://www.coolscifi.com/forums/showthread.php?t=198403" style="font-size: 11px;">www.coolscifi.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.coolscifi.com/forums/showthread.php?t=198403"><div align="center"><img src="http://content6.clipmarks.com/blog_cache/www.coolscifi.com/img/B3559B7C-46EE-4CCC-86CC-A24E16AF93FD" alt="" /></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.coolscifi.com/forums/showthread.php?t=198403"><DIV>
 <B> Explanation: </B> Does Mars always appear the same? <A target="_blank" href="http://en.wikipedia.org/wiki/No_sign">No.</A> As both Earth and Mars orbit the Sun, the <A target="_blank" href="http://chandra.harvard.edu/photo/scale.html">apparent angular size</A> of Mars changes as viewed from the Earth. <A target="_blank" href="http://www.astrofotografie.nl/Mars.htm">Pictured above</A> from <A target="_blank" href="http://en.wikipedia.org/wiki/Enschede">Enschede</A>, <A target="_blank" href="http://en.wikipedia.org/wiki/Netherlands">Holland</A>, Mars was captured in 2007 and 2008 with 30 separate images, all taken with the same magnification. When <A target="_blank" href="http://antwrp.gsfc.nasa.gov/apod/ap070325.html">Earth</A> and <A target="_blank" href="http://antwrp.gsfc.nasa.gov/apod/ap010718.html">Mars</A> are on opposite sides of the Sun, Mars appears relatively small. Conversely, when Earth and Mars are near each other, <A target="_blank" href="http://antwrp.gsfc.nasa.gov/apod/ap030813.html">Mars looms</A> large and bright. The largest <A target="_blank" href="http://www.dustymars.net/Observing_Mars.html">Mars</A> has appeared in recent history was the <A target="_blank" href="http://antwrp.gsfc.nasa.gov/apod/ap030828.html">opposition of August 2003</A>. Since Mars is always more distant from the Sun than the Earth, <A target="_blank" href="http://antwrp.gsfc.nasa.gov/apod/ap031112.html">Mars</A> never shows a crescent phase to Earthlings. <A target="_blank" href="http://antwrp.gsfc.nasa.gov/apod/ap990705.html">Visible</A> also in the above images are the <A target="_blank" href="http://antwrp.gsfc.nasa.gov/apod/ap021224.html">north polar cap of Mars</A>, dark and light soil, clouds, and, in the early images, a global <A target="_blank" href="http://antwrp.gsfc.nasa.gov/apod/ap011017.html">dust storm</A>. The <A target="_blank" href="http://www.seds.org/~spider/spider/Mars/marsopps.html">next opposition</A>, when Earth again passes near to Mars, will occur in early 2010. </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/6AB650FA-45ED-45C5-AF96-CE3126B3D7E2/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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