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Originally posted by coolottie
Here Is NASA growing Ice Crystals.
www.nasa.gov...
The Pattern Formation during Ice Crystal Growth (Ice Crystal) investigation examines the effect of microgravity on the pattern formation of ice crystals by a method of in-situ observation. .
Dendritic crystals have complicated patterns that look like tree branches. Ice crystals are the typical example. Our aim is to understand the formation of such crystalline shapes, and in order to do so, we need to closely observe crystal growth and understand its mechanisms. But unfortunately, on Earth the process of crystal growth is affected by fluid flow that occurs around the crystal. To avoid this, we need to do our experiments in an environment where the crystal's growth is completely undisturbed. This is why space is an ideal environment - no gravity, no fluid flow. We can achieve a level of precision that's impossible on the ground.
... H2O vented from the shuttle's power units, the correct name escapes me at the moment....
The CDR repointed the UVC 3 times during the first EVA, 4 times the second, and 3 on the third. Each time he had to press the "reset" switch, as planned. Actual exposures were controlled by an electronic sequencer. Aiming the unit was more difficult than had been anticipated. Because of high friction in the azimuth adjustment (the lubricant was a poor choice for the cold conditions since it became waxy below 10deg C), the camera often needed re-leveling after a new target was selected. The condition degraded with each adjustment. Because of this friction, the uneven and sloping surface, and the occasional camera moves to keep the camera in the LM shadow, it used more EVA time than anticipated. On the last EVA, some shots were aligned by eye. The first target was very bright relative to later targets and manual operation of the unit was used to get several short exposures. Inadequate film advance caused the first 7 exposures to be overlapped by adjacent frames (he was supposed to wait 3 seconds between shots but did not.) The overlapping did not adversely affect the science.
think you have too much confidence in people, ATS has always been like this to be fair, but your correct about the recent increase in stupidity from 2011 join date members.
The other bit is, like 99.999% of these ISS video examples, just debris of some sort....
Originally posted by coolottie
Here is a link talking about the Japaness doing the experiment