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There is more He-3 energy on the Moon than we have ever had in the form of fossil fuels on Earth. All we have to do is to go there and get it.

Revealing water in significant quantities on the Moon could truly be a turning point in space exploration.

The source of all the energy is the sun. The big challenge is, how do you use all of that energy? Solar power has to fascinate you. There have been strides to get the costs down, and if this will work, you have to get costs down so it is competitive with fossil fuels.

We live in a world bathed in 5,000 times more energy than we consume as a species in the year, in the form of solar energy. It's just not in usable form yet.

The environmental benefits of hydrogen are also outstanding. When used as an energy source, hydrogen produces no emissions besides water. Zero polluting emissions, an amazing advance over the current sources of energy that we use.

The moon's closeness is a huge advantage: To make it habitable, we would first have to bombard it with water-ice comets, a tricky endeavor best attempted with the many resources waiting on and near Earth.

If we are serious about moving toward energy independence in a cost-effective way, we should invest in solar energy. If we are serious about cutting air and water pollution and reducing greenhouse gas emissions, we should invest in solar energy.

I think that inexpensive sources of planet-friendly energy are one of the most important things for us to pursue.

And when these advances are made, hydrogen can fill critical energy needs beyond transportation. Hydrogen can also be used to heat and generate electricity for our homes. The future possibilities of this energy source are enormous.