The 21-meter (69-foot) diameter spherical building is one of the biggest planetariums in Asia. It is named for Indira Gandhi, the former Prime Minister of India, and opened to the public in 2003. Water surrounds the building and lights from below make it look like it is floating in space. When the planetarium first opened, their Japanese projector was the most advanced in the market. But now, the thick layer of dust covering the machinery and the outdated desktop computer in the operator’s booth indicate that the operation is in need of an upgrade.
There is a small and informative exhibition on the planetarium’s ground floor. It shows a variety of dioramas, including one featuring NASA’s Mars Pathfinder mission, with a replica of the Sojourner rover that moves on a fake Martian surface. There are also models of Indian-built rockets and a figure of Rakesh Sharma, the first Indian astronaut, wearing a spacesuit. In addition to the main building, the planetarium also has three mobile units. They travel regularly to countryside schools and fairs with inflatable domes and a projector to educate kids on the importance of space exploration and science.
According to atlasobscura.com