Gravitational wave
In his role as the Secretary of the Department of Atomic Energy, he signed a Memorandum of understanding (MoU) with the National Science Foundation in 2016, to establish an advanced Gravitational wave detector in India. When completed, the Indian Initiative in Gravitational-wave Observations or INDIGO will be the fifth large scale gravitational wave detector in the world, and the third LIGO detector in the world after LIGO US, and VIRGO gravitational wave detector in Italy. A site near Aundha Nagnath in the Hingoli District, Maharashtra has been selected, with a predicted date of commission in 2024.