Wednesday, June 03, 2015

Space Station Marathon

Space Station Marathon

What's better than seeing the International Space Station glide brightly among the stars on a warm summer night? How about seeing it four times? For the next few weeks, sky watchers in the northern hemisphere can catch the ISS making multiple passes over their home towns. Photographer Alan Dyer sends this report from Gleichen, Alberta: "On the night of May 31/June 1, I was able to shoot the passage of the International Space Station on each of four successive orbits, at 90-minute intervals, from dusk to dawn."

"Seeing the space station on not one but two, three, or even four orbits in one night is possible at this time of year near northern summer solstice because the Station is now continuously lit by sunlight -- the Sun never sets from the altitude of the ISS," explains Dyer. "When the ISS should be entering night, sunlight streaming over the north pole still lights the station at its altitude of 400 km."
Satellite enthusiasts call this an "ISS marathon." Find out when to look using's Simple Satellite Tracker.

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