<http://schema.org/alternativeHeadline>
"Scientists hope Maven's observations reveal details about how the Red Planet lost much of its atmosphere, which was once relatively thick"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/earth-matters/space/stories/maven-nasas-next-mars-mission-poised-for-nov-18-launch>