<span style="color: #222222;">President Ramnath Kovind has said the world has lost an astronomy legend with the demise of Professor Govind Swarup.<br />''<br />''In a tweet, Mr Kovind said he contributed to fundamental developments in radio astronomy and created two of the world's largest radio telescopes in India.<br />''<br />''Prime Minister Narendra Modi has expressed anguish at the passing away of scientist Professor Govind Swarup. In a tweet, Mr Modi said his pioneering works in radio astronomy have attained global commendation.<br />''<br />''Professor Swarup passed away in Pune yesterday.</span>