The International Space Station is Earth’s only microgravity
lab. There are scientific and technological experiments – either automated or conducted
by crew members – that can only take place there. The station orbits our planet
roughly every 90 minutes, which means in 24 hours it passes by about 16 times.
But it’s almost impossible to see during the day and most of the night. You can
only spot it when you’re in the dark and the space station is lit by the sun: shortly
after sunset and before sunrise. Coincidentally, these are our favorite times
for walking the dogs. So, for the past few months we’ve been entertaining ourselves
(and anyone who will listen to us) by pointing out the space station as it
moves across the sky. The next time it comes into view (in my neck of the
woods) is Tuesday at 7:21 a.m. You can check spotthestation.nasa.gov to see when
it’s visible where you live.
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