A proposed observatory in Nilgiri forests threatens to disturb wildlife movement In early 2000, a team of scientists gathered at the Saha Institute of Nuclear Physics in Kolkata and decided to revive research on neutrinos, tiny elemental particles that can pass through almost all matter unhindered. A flurry of meetings followed culminating in a project called India-based Neutrino Observatory (ino), touted as the biggest and most ambitious experiment on particle physics in India. This has generated much enthusiasm among physicists, for though neutrinos are one of the fundamental particles that make up the universe, they are least understood. There are only a handful of observatories in the world carrying out experiments on neutrinos.