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 Spaceweather.com's Simple