Astronauts take 3rd and final spacewalk
(AP)
<p><img src="http://d.yimg.com/img.news.yahoo.com/util/anysize/130,http%3A%2F%2Fd.yimg.com%2Fa%2Fp%2Fap%2F20090323%2Fcapt.164e051c25cd411ba90d6d81a13e4692.space_shuttle_ny117.jpg?v=2" align="left" height="93" width="130" alt="In this photo released by NASA, space shuttle Discovery astronaut Steve Swanson participates in the mission's second scheduled session of extravehicular activity (EVA) as construction and maintenance continue on the international space station, Saturday March 21, 2009. (AP Photo/NASA)" border="0" /> (http://us.rd.yahoo.com/dailynews/rss/topstories/*http://news.yahoo.com/s/ap/20090323/ap_on_sc/space_shuttle)AP - Two astronauts who were teaching math and science to middle school students just five years ago went on a spacewalk together Monday, their path cleared of dangerous orbiting junk that had threatened the space station and shuttle.</p><br clear="all"/>
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