1.   I chipped up the wafers and mixed them into a jar of white crystals.

2.   Then they pulled out tiny glass phials of white crystal.

3.   When they are exhaled they are filtered through the white crystals of soda lime, and a bacterial filter.

4.   First there was a flurry of white crystals suspended in the airless environment.

5.   Preserved in each white crystal is a little of the local air, the water and the earth.

6.   The only debris that seemed to be flying around the module was some white crystals that looked like frozen soap.

7.   There are only some white crystals flying around like soap.