The good news is that technically, they have succeeded in claiming Mars for the bovines.
(There was no flag available but if a future NASA mission lands a rover there, soil samples will defnitively prove that the Holsteins planted…something.)
No, no. The Holsteins are well aware that they didn’t walk all the way to Mars. They just wandered a bit too far during a tour of NASA and, after passing through a door that was supposed to be locked, found themselves on the soundstage where they were faking all of the footage from the so-called "Mars rovers."
See it here: http://flic.kr/p/FW6YoS