Advancements in rocketry, spacecraft and instruments of exploration have opened an epic new era of cosmic discovery. Complex challenges driving such achievements yielded countless technological advancements and business opportunities that continue to enhance the quality of our everyday lives.In total, these advancements have expanded human experience while making our world seem smaller.Buzz Aldrin and Larry Bell bring us up to date on the current state of space exploration and make a case for establishing a permanent human presence on Mars.