One of them is "Recidivism." It appeared in So It Begins
Another, more recent story appears in Going Interstellar:
Travelling between the stars at slower than light speeds, and based on some reasonable extrapolation of current theoretical engineering limits: that was the theme of Going Interstellar. My contribution, "Lesser Beings," takes a hard sf approach and resolves with a rather unusual social spin on the notion of what constitutes a "successful" voyage to another star.