<a href="https://en.wikipedia.org/wiki/NASA" id="mwAXA" rel="mw:WikiLink" title="NASA">NASA</a>'s <i id="mwAXE"><a href="https://en.wikipedia.org/wiki/Phoenix_(spacecraft)" id="mwAXI" rel="mw:WikiLink" title="Phoenix (spacecraft)">Phoenix</a></i> lander touches down in the <a href="https://en.wikipedia.org/wiki/Green_Valley_(Mars)" id="mwAXM" rel="mw:WikiLink" title="Green Valley (Mars)">Green Valley</a> region of <a href="https://en.wikipedia.org/wiki/Mars" id="mwAXQ" rel="mw:WikiLink" title="Mars">Mars</a> to search for environments suitable for water and <a href="https://en.wikipedia.org/wiki/Life_on_Mars" id="mwAXU" rel="mw:WikiLink" title="Life on Mars">microbial life</a>.