To the Moon!

This is an interesting proposal:
The European Space Agency's chief scientist has said that there should be a Noah's Ark on the Moon, in case the Earth was destroyed by an asteroid or nuclear holocaust. Speaking exclusively to BBC News at the British Association Science Festival, Dr Bernard Foing said that the ark should be a repository for the DNA of every single species of plant and animal. [...] He is concerned that if the Earth were destroyed, there would be little or nothing left of the rich diversity of life on the planet. His solution is to build a DNA library on the Moon. "If there were a catastrophic collision on Earth or a nuclear war you could place some samples of Earth's biosphere, including humans, [on the Moon]," he said. "You could repopulate the Earth afterwards like a Noah's Ark," he said.
The only problem I can see with this idea is evident upon a quick glance of the picture accompanying the story. The moon is even more susceptible to space debris because it does not have as stable an atmosphere as Earth. It would be a shame to build a DNA library on the Moon only to have it destroyed by the very thing it is suppossed to be protecting itself from. I say we put the DNA in a satellite and just let it go. If you really love something, let it go. Someone will find it and will be able to grow humans. It will almost be like a virus.