If we want to send Earthlings to outer space to colonize other planets in the galaxy, how about we send water bears? The actual capsule could be the size of a watermelon, holding in pressurized water for the water bears to hibernate in. Program a computer with logic programming for self guidance to allow the space craft to get captured by a star and search for possible locations for the water bear to live on.
I know it might sound ridiculous, but water bears would have the most probable chance of surviving a long space journey. While it would cost $100 billion or more to build a space craft for humans to be sent other stars, the craft for water bears could cost no more then $500 million.