Space can be lonely, and, if some adages are to be believed, no one can hear you scream out there. You may want to bring along some friends, maybe not so much for the screaming but for sharing fuel and good times. That’s where docking and boarding comes in.    Previously referred to with the blanket term “parenting”, breaking them off as boarding and docking clarifies what they are and what they do. Just as the name implies, boarding allows passengers to come aboard your ship. Docking