GIVE UP ON MANNED MISSIONS ALREADY!
You do great work with automated probes and observation of planets, moons, the sun, and beyond. Keep that up!
But, please, divest yourself of the 1960's "manned space-race" mentality. It wastes lives and $$$$$$. Your congressional charter gives you the mission "To reach for new heights and reveal the unknown." If a mission can be accomplished with probes, there is no reason to send humans. Only loft a human when it is necessary FOR THE MISSION.
Please, explore as you are intended to do, but quit insisting on sending a carcass along for the ride. It's holding you back.