This detection is significant in three remarkable ways - first, it allows us to independently test Einstein's General Theory of Relativity as we recorded two different forms of radiation - gravitational waves and light - originating from the same astrophysical source.



Second, we were able to constrain the expansion of our universe and subsequently measure the age of our Universe.



Third, the collision provides us clues on how heavy elements like gold and platinum are produced in our cosmos. Each element of gold that we love to show off in our jewellery, has reached our earth after traveling from such collision of neutron stars from millions of light years from galaxies far far away. Yes, all of us carrying the pride of wearing gold are carrying relics from such cosmic events!

Connection to India

This discovery opens up the long-awaited era of multimessenger astronomy. As a scientist, it is very reassuring to see that India is investing in a field that is only seeing its early days. In future, with LIGO-India, we will be able to more precisely constrain the sky-location of such events as well as the extreme matter physics of such neutron stars.

Building such mega-science projects allows Indian universities to participate in cutting-edge research, which ultimately trickles down all the way to impacting undergraduate education. Imagine first-year college students from local colleges and state universities analysing spacetime rhythms from events that occurred even before life started on this planet!

In combination of other grand science projects, including India's very own space observatory ASTROSAT as well funding one of the world's biggest telescope (Thirty Meter Telescope), I can proudly say there has never been a better time to do space-related science in India.