Here I am at the turn of the millennium and I'm still the last man to have walked on the moon, somewhat disappointing. It says more about what we have not done than about what we have done.

I've been asked about UFOs and I've said publicly I thought they were somebody else, some other civilization.

If the guidance failed or started to stray or went somewhere we didn't like or the ground didn't like, I could flip a switch, and I could control seven, over seven and a half million pounds of thrust with this handle and fly the thing to the Moon myself.

I do believe there is life in outer space. Mathematically, there has to be, and if you believe as I do that there is a creator of the universe, then how can we be so arrogant to believe he created life here and nowhere else?

Today, we are on a path of decay. We are seeing the book close on five decades of accomplishment as the leader in human space exploration.

Some astronauts describe the routine flushing of urine into space, where the freezing temperatures turn the droplets into a cloud of bright, drifting crystals, as being among the most amazing sights they saw on an entire voyage.

Once I finally stepped on the moon, no matter what was to come of the next three days - or the rest of my life - nobody could take those steps from me. People ask how long will they be there, and I say forever, however long forever is, like my daughter’s initials that I scribbled in the sand [TDC for Tracy Dawn Cernan].