I was lucky enough to have been born on this planet earth, in this admirable country of the United States of America.

I was lucky enough to have been born on this planet earth, in this admirable country of the United States of America.

I inherited depression from my mother's side of the family.

Mars has been flown by, orbited, smacked into, radar examined, and rocketed onto, as well as bounced upon, rolled over, shoveled, drilled into, baked and even blasted. Still to come: Mars being stepped on.

We can't start over and develop a Saturn 5-type vehicle from scratch.

Don't waste your time on beaming people up or down. Instead, consider gravity waves as advanced physics of the universe that could be used to travel interstellar distances.

We need to have people up there who can communicate what it feels like, not just pilots and engineers.