You Need Propellants To Accelerate Toward Mars,

Monumental Achievements By Humanity Should Be Done By Major Organizations As Much Together As Possible.

To Send Humans Back To The Moon Would Not Be Advancing. It Would Be More Than 50 Years After The First Moon Landing When We Got There, And We'd Probably Be Welcomed By The Chinese. But We Should Return To The Moon Without Astronauts And Build, With Robots, An International Lunar Base, So That We Know How To Build A Base On Mars Robotically.

Returning To The Moon With Nasa Astronauts Is Not The Best Usage Of Our Resources. Because Our Resources Should Be Directed To Outward, Beyond-the-moon, To Establishing Habitation And Laboratories On The Surface Of Mars That Can Be Built, Assembled, From The Close-by Moons Of Mars.

The Pilgrims On The Mayflower Landed At Plymouth Rock. To My Knowledge, They Didn't Wait Around For A Return Trip To Europe. You Settle Some Place With A Purpose. If You Don't Want To Do That, Stay Home. You Avoid An Awful Lot Of Risks By Not Venturing Outward.

I Don't Believe Any Pair Of People Had Been More Removed Physically From The Rest Of The World Than We Were.