Placed in an orbit of 500 km above the Earth, the International Space Station (ISS), a space research lab of community of nations is circling every 90 minutes and is visible to the naked eye if in right angle.
To see it, the ISS must be 40 degrees or more above the horizon and the reflection of sun light on it makes us spot the spacecraft for just two minutes as its speed is 5 miles per second travelling at about 17,500 miles (28,000 km) per hour.
It should be both dark in your location and the space station has to be going overhead and it looks like a fast moving star. The crew inside witnesses 16 sunrises and sunsets daily. But the ISS space station will be difficult to isolate in the space from other stars.
The ISS, measuring about a football stadium in size, has Russian, US, Japan astronauts and researchers on board. They experience the daylight temperatures reach 200ºC, while temperatures during the night drop to -200ºC.
The travel path of ISS can be seen on website http://iss.astroviewer.net/ where the real-time position of the International Space Station will be given though the accompanying map is not real time.
This map shows the ground track of the International Space Station’s next orbit and the crosshair marks its current position. The blue sections of the ISS’ track indicate when the space station is in the earth’s shadow and the red sections mark when the ISS is sunlit.
You can also see what the astronomers see right now here.