With amateur astronomers having a galactic ball over the past week by witnessing the presence of NASA's International Space Station (ISS) overhead, it's now time for Mumbaikars to see the space lab for themselves. The real visual treat will take place during the early hours of April 19 and 21, when the ISS will appear close to the moon, and pass over Saturn, Jupiter and Mars — all of which can be seen with the naked eye.

The ISS is the third brightest object in the sky and also the longest-serving space station, with astronauts having started its construction in 1998. Astronauts usually spend six months at a time aboard it, with the aim of studying health effects of prolonged space missions.