<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div style="margin: 0px; font-size: 12px; "></div><div style="margin: 0px; font-size: 12px; font-family: Arial; "><span style="letter-spacing: 0.0px">"PASADENA, Calif. - The positions of the planets next month will mean diminished communications between Earth and NASA's spacecraft at Mars.</span></div><div style="margin: 0px; font-size: 12px; font-family: Arial; min-height: 14px; "><span style="letter-spacing: 0.0px"></span><br></div><div style="margin: 0px; font-size: 12px; font-family: Arial; "><span style="letter-spacing: 0.0px">Mars will be passing almost directly behind the sun, from Earth's perspective. The sun can easily disrupt radio transmissions between the two planets during that near-alignment. To prevent an impaired command from reaching an orbiter or rover, mission controllers at NASA's Jet Propulsion Laboratory, Pasadena, Calif., are preparing to suspend sending any commands to spacecraft at Mars for weeks in April. Transmissions from Mars to Earth will also be reduced.</span></div><div style="margin: 0px; font-size: 12px; font-family: Arial; min-height: 14px; "><span style="letter-spacing: 0.0px"></span><br></div><div style="margin: 0px; font-size: 12px; font-family: Arial; "><span style="letter-spacing: 0.0px">The travels of Earth and Mars around the sun set up this arrangement, called a Mars solar conjunction, about once every 26 months.</span></div><div style="margin: 0px; font-size: 12px; font-family: Arial; min-height: 14px; "><span style="letter-spacing: 0.0px"></span><br></div><div style="margin: 0px; font-size: 12px; font-family: Arial; "><span style="letter-spacing: 0.0px">"This is our sixth conjunction for Odyssey," said Chris Potts of JPL, mission manager for NASA's Mars Odyssey, which has been orbiting Mars since 2001. "We have plenty of useful experience dealing with them, though each conjunction is a little different."</span></div><div style="margin: 0px; font-size: 12px; font-family: Arial; min-height: 14px; "><span style="letter-spacing: 0.0px"></span><br></div><div style="margin: 0px; font-size: 12px; font-family: Arial; "><span style="letter-spacing: 0.0px">The Mars solar conjunctions that occur once about every 26 months are not identical to each other. They can differ in exactly how close to directly behind the sun Mars gets, and they can differ in how active the sun is. The sun's activity, in terms of sunspots and solar flares, varies on a 22-year cycle."</span></div><div style="margin: 0px; font-size: 12px; font-family: Arial; min-height: 14px; "><span style="letter-spacing: 0.0px"></span><br></div><div style="margin: 0px; font-size: 12px; font-family: Arial; color: rgb(4, 51, 255); "><span style="letter-spacing: 0.0px; color: #000000">Global Martian Map: <a href="http://www.mars.asu.edu/maps/?layer=thm_dayir_100m_v11"><span style="letter-spacing: 0px; ">http://www.mars.asu.edu/maps/?layer=thm_dayir_100m_v11</span><span style="letter-spacing: 0px; color: rgb(0, 0, 0); ">.</span></a></span></div><div style="margin: 0px; font-size: 12px; font-family: Arial; min-height: 14px; "><span style="letter-spacing: 0.0px"></span><br></div><div style="margin: 0px; font-size: 12px; font-family: Arial; "><span style="letter-spacing: 0.0px">"A simulated fly-through using the newly assembled imagery is available online at <a href="http://www.nasa.gov/mission_pages/mars/missions/odyssey/20060313.html"><span style="letter-spacing: 0px; color: rgb(4, 51, 255); ">http://www.nasa.gov/mission_pages/mars/missions/odyssey/20060313.html</span></a>.</span></div><div style="margin: 0px; font-size: 12px; font-family: Arial; min-height: 14px; "><span style="letter-spacing: 0.0px"></span><br></div><div style="margin: 0px; font-size: 12px; font-family: Arial; "><span style="letter-spacing: 0.0px">The fly-through plus tools for wandering across and zooming into the large image are at <a href="http://themis.asu.edu/"><span style="letter-spacing: 0px; color: rgb(4, 51, 255); ">http://themis.asu.edu/</span></a>."</span></div><div style="margin: 0px; font-size: 12px; font-family: Arial; min-height: 14px; "><span style="letter-spacing: 0.0px"></span><br></div><div style="margin: 0px; font-size: 12px; font-family: Arial; "><span style="letter-spacing: 0.0px"><b>DAILY MARS ODYSSEY THEMIS IMAGES</b></span></div><div style="margin: 0px; font-size: 12px; font-family: Arial; "><span style="letter-spacing: 0.0px">Thermal Emission Imaging System (THEMIS) web site: (<a href="http://themis.la.asu.edu/latest.html"><span style="letter-spacing: 0px; color: rgb(4, 51, 255); ">http://themis.asu.edu/gallery</span></a>)</span></div><div style="margin: 0px; font-size: 12px; font-family: Arial; min-height: 14px; "><span style="letter-spacing: 0.0px"></span><br></div><div style="margin: 0px; font-size: 12px; font-family: Arial; "><span style="letter-spacing: 0.0px">The Odyssey data are available through a new online access system established by the Planetary Data System at: <a href="http://starbrite.jpl.nasa.gov/pds/"><span style="letter-spacing: 0px; color: rgb(4, 51, 255); ">http://starbrite.jpl.nasa.gov/pds/</span></a> </span></div><div style="margin: 0px; font-size: 12px; font-family: Arial; min-height: 14px; "><span style="letter-spacing: 0.0px"></span><br></div><div style="margin: 0px; font-size: 12px; font-family: Arial; color: rgb(4, 51, 255); "><span style="letter-spacing: 0.0px; color: #000000">Visit the Mars Odyssey Mission page at <a href="http://mars.jpl.nasa.gov/odyssey/index.html"><span style="letter-spacing: 0px; ">http://mars.jpl.nasa.gov/odyssey/index.html</span></a>.</span></div><div style="margin: 0px; font-size: 12px; font-family: Arial; min-height: 14px; "><span style="letter-spacing: 0.0px"></span><br></div><div style="margin: 0px; font-size: 12px; font-family: Arial; "><span style="letter-spacing: 0.0px">* <b>Mars Missions Status</b> - New Mars missions are being planned to include several new rover and sample collection missions. Check out the Mars Missions web page: <a href="http://mars.jpl.nasa.gov/missions/"><span style="letter-spacing: 0px; color: rgb(4, 51, 255); ">http://mars.jpl.nasa.gov/missions/</span></a> and the Mars Exploration page: <a href="http://marsprogram.jpl.nasa.gov/"><span style="letter-spacing: 0px; color: rgb(4, 51, 255); ">http://marsprogram.jpl.nasa.gov/</span></a>.</span></div><div style="margin: 0px; font-size: 12px; font-family: Arial; min-height: 14px; "><span style="letter-spacing: 0.0px"></span><br></div><div style="margin: 0px; font-size: 18px; font-family: Arial; "><span style="font-size: 12px; font-family: Helvetica; "></span></div></body></html>