"Hello Houston, we have a problem".
"We copy you, Apollo 55. What SEEMS to be problem"?
"It's arithmetic. Everything looks so different from up here. As Charles Douglas Wehner pointed out, at http://wehner.org/agrav , our speed is added to that of anything that is coming towards us, or orbitting towards us. It is taken away from speed of anything moving or orbitting in same direction as us".
"We copy you, Apollo 55. That's no problem. If A plus B equals C, then C minus A is B. If E is twice F, then F is half E. Just reverse all equations, and imagine you are in Houston".
"We copy you, Houston - but linear relativity of Ernst Mach does not work at these speeds and distances. We have plenty of food, oxygen and fuel. However, we find that "Mighty Child" anomaly Wehner described in "Spin-Orbit Duality" applies to us (see http://www.goarticles.com/cgi-bin/showa.cgi?C=12988 )".
"We copy you, Apollo 55 - please explain problem".
"A child has all energy it needs to spin a top, but would need to be almighty to put universe into orbit around that top - so spin-orbit duality breaks down. Einstein discovered that he needed to distort time or space, or something - just to make his equations balance. We are forced into non-linear (Einsteinian) Relativity, and cannot make equations balance. Either we have more than enough energy to get home, or vastly too little. Nor, from up here, can we match data you have sent us".