Perhaps the biggest stone of all with all of the kilometers or miles behind it was the first ever landing of a probe on a comet hundreds of millions of kilometers away. (sparxtrading.com)
With millions of kilometers run by hundreds of prototypes, with a two - year development procedure, what can we expect from the A about to come into the light. (mercedesblog.com)
Within the Cloud, these dormant comets are typically tens of millions of kilometers apart. (solstation.com)