NASA hopes that one small step by Google's Lunar X Prize will eventually lead to a giant leap in protecting historical sites on the moon. The X Prize Foundation announced that it will adopt guidelines released by the space agency last year to help preserve lunar heritage sites. The move comes at a crucial time as a new space race increases the possibility of an imminent moon landing, according to NASA. Google's Lunar X Prize alone currently has 26 contestants worldwide vying to land a robot on the lunar surface by