Zounds! After an exhausting night space chase with Spaceman Spiff, Zorg the Martian needed a break. Thankfully, Spaceman Spiff needed one as well, and so they called a (temporary) truce and bid each other adieu.
He looked around, and quickly found a spot that looked safe enough, near a lighted shed in a tree. He wasn't too picky, because any good flyer knows that you Don't Fly Drowsy, and he was surely beyond that point. He landed his ship, then proceeded to take a much-needed nap. That is where you should still find him, still snoozing away, though I'm sure he wouldn't mind waking up from his nap to meet some new friends!
As long as Spaceman Spiff doesn't get bored and sniff him out first, he should still be there. ...otherwise all you may find is a burn mark with some bits of alien residue! Let's hope that isn't the case!