Every year on this day, India celebrates National Science Day to honour the discovery of the 'Raman Effect' by physicist sir C.V Raman. On February 28, in the year 1928, physicist sir C.V Raman announced his groundbreaking ‘Raman Effect’ theory, for which he was conferred with the prestigious Nobel Prize in 1930. What is Raman Effect? CV Raman invented that the light scatters when it passes through a transparent material. It leads to a change in its wavelength and energy. This discovery by CV Raman was hailed as a marvellous contribution to the field of physics. After this invention, Raman became the first Indian scientist to receive the prestigious Nobel Prize in science. Hailing the achievement of Raman, the Government of India declared 28th February as ‘National Science Day.’ On this day, various events related to science, exhibitions and competitions are organised across the county. Activities like sky watching, research demonstrations and talk shows also take place. Ever since CV Raman gave push to the science sector of the country with his achievement, India has made remarkable contributions in this sector. Starting from Green Revolution, to nuclear tests, historic moon landing to human space mission, India has entered into the golden era of science. Let’s look at some achievements on India in the science and space sector so far. In the 1960s, eminent scientist MS Swaminathan led the ‘Green Revolution,’ which emphasised on farm productivity by increasing the availability and use of fertilizers and pesticides to reduce damage to crops. He was recently bestowed with the prestigious Bharat Ratna award for his contributions. In 1975, India launched its first satellite into the space which was ‘Aryabhata.’ On April 3, 1984, Rakesh Sharma became the first Indian astronaut to enter the space. Sending a message to the world, India entered the elite group of nuclear nations, when it conducted successful nuclear test on May 11, 1998 in Pokhran, Rajasthan. Taking lessons from the first failed attempt to land on the moon surface, in August 2023, ISRO’s Chandrayaan-3 successfully landed on the southern polar region of the Moon. With this, India became the fourth country to land on the moon and the first to land on the south pole. In 2023, September 2, ISRO started India’s first ever solar mission with the lunch of Aditya L1 Satellite to observe and know more about the sun. India also buckled up to expand its space exploration as, on February 27, Narendra Modi announced four astronaut-designates for India's Gaganyaan Mission. The Gaganyaan Mission will be India’s first manned space mission aiming to launch in 2024 or 2025.