Do you remember 1982’s “TRON” movie? The plot: A computer programmer (epic: Jeff Bridges) is digitized inside the software world of a mainframe computer, where he interacts with various programs in his attempt to get back out. I loved the light cycle races and strange solar wind ships…
Back in the real word the ISS is in a way one of these solar ships, constantly rotating around us. A tiny white spot, as it can be seen racing over the sky from time to time, when illuminated by the sunset (and sunrise ;).
This Video was achived by “stacking” image sequences provided by NASA from the Crew at International Space Station (see also fragileoasis.org/blog/2012/3/on-the-trails-of-stars/). These “stacks” create the Star Trails, but furthermore make interesting patterns visible. For example lightning corridors within clouds, but they also show occasional satellite tracks (or Iridium Flashes) as well as meteors - patterns that interrupt the main Star Trails, and thus are immediately visible.
The many oversaturated hot pixels in some of the scenes are the inevitable result of ultrahigh ISO settings the Nikon D3s in ISS-use are pushed to for keeping exposure times short by all means (owed to the dramatic speed the ISS travels). As there are no dark frames or RAW data currently available, hot pixels are not easy to remove.