Fig. 3
Snapshots of particle evolution. Only part of the volume is shown to enhance visual resolution. Left: 3 s in microgravity shortly after the cloud starts to cool.Right: cloud 9 s in microgravity shortly before the experiment has fallen back on the ground and microgravity ends. A transition from individual grains to cluster formation is visible. We note that the depth of the volume is 44 mm, thus, it may be the case that particles that appear to be next to each other are actually quite distant in reality.
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