The connected Zarya and Unity modules after Unity was released from the Space Shuttle Endeavor’s cargo bay.
Fifteen years ago on Nov. 20, 1998, the Roscosmos (the former Russian Space Agency) launched a Proton rocket that sent the Zarya module into space. This was the first section of the International Space Station. Two weeks later on Dec. 4, the United States launched the Unity module making the 2 modules a real international space station.
The ISS is now the third brightest object in the sky after the sun and moon. If you know where and when to look you can easily see it without a telescope, and NASA’s Mission Control at the Johnson Space Center in Houston can tell you when and where. Log onto Nasa.gov to receive e-mail or text alerts a few hours before the ISS will be passing over your area. If you sign up soon you might even be able to spot it while “comet hunting” during the Thanksgiving holiday.