| The Moon's crust is composed of a material known as regolith. |
| The regolith is a small-grained material resulting from multiple impacts on the moon's surface. |
| All spectra show an absorption band near 3,1 microns attibuted to fine-grained water ice as a frost deposited on regolith grains. |
| If people start rejiggering the atmosphere and thawing the regolith, so much the worse. |
| The Moon's regolith was created by the ceaseless bombardment of micrometeorites, cosmic rays and particles of solar wind breaking down rocks for billions of years. |
| Instead, it would listen for the brief radio-frequency spike caused when one ploughs into the lunar regolith. |
