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willpittenger
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Apollo missions included an abort option called a free return. The TLI burn left the craft on a trajectory that unless changed would send it back to the earth rather than lunar orbit. However, what about a trip to Venus, Mars, or an asteroid? Such trips would leave the Earth's gravitational influence so I doubt a free return would be an option. <div class="Discussion_UserSignature"> <hr style="margin-top:0.5em;margin-bottom:0.5em" />Will Pittenger<hr style="margin-top:0.5em;margin-bottom:0.5em" />Add this user box to your Wikipedia User Page to show your support for the SDC forums: <div style="margin-left:1em">{{User:Will Pittenger/User Boxes/Space.com Account}}</div> </div>