Swirling 250 miles (400 kilometers) above Earth, the International Space Station (ISS) completes a full orbit of our planet every 90 minutes or so. You can see it with your naked eyes at night (at least, you can see a white dot of steady-cruising light), but spotting the station during the daytime — as photographer Rainee Colacurcio did in the fiery photo above — requires a bit of technological assistance.
"My go-to setup is a dedicated hydrogen-alpha solar scope," which is a special telescope for observing the sun, Colacurcio told Live Science in an email.
Photo - NASA - Astronomy - Picture - Day
The above photo, featured recently on NASA's Astronomy Picture of the Day blog, is a composite of several exposures of the sun stitched together with Photoshop and various other editing programs. Using a website called transit-finder.com, Colacurcio calculates exactly where and when the ISS will appear to pass in front...