I was able to land on the Mun with no issue (I thought). I plant the flag, take a screen shot and do all of my Science! Yay! I finally can get that Clamp-O-Tron I've had my eye on! Get back into the lander. Power up! Bingo fuel. What? NO! Fine, I'll transmit it back! Batteries are dead. Every rescue mission I send winds up the same: if I can get to the Mun, I have no fuel left to leave. Not only that, I don't have enough Science to get the docking equipment so I can't just send up a refueler. Any ideas?
