Space Suit: After the success of Chandrayaan, Mangalyaan in Indian space science, preparations for Gaganyaan are now going on. Astronauts and scientists going in these vehicles wear a special suit. These are called space suits. The space suit worn by astronauts is not just a thick cloth, but it is like a human-sized miniature plane.
National Awardee Sarika Gharu explained the science of space suit on the occasion of National Science Day (28 February). Sarika told that there are two types of space suits. The first type of space suit is used to go from earth to space and then return. The second is used for space walk.
Sarika told that about 300 feet of water tubes are woven into the fabric in the space suit. In these, cold water flows near the astronaut’s skin. The gloves in the space suit are such that the fingers can move well. These are fitted with heaters which keep the fingers warm. The flexible parts of the space suit are made of 16 layers. The next layers maintain the temperature like a thermos. The outermost white layer is water and fire resistant and bullet proof material.
On the back of the space suit is a backpack, in which the equipment is attached.
It consists of equipment for giving oxygen and removing carbon dioxide, equipment for providing electricity, chiller pumps for cooling water. An audio system under the helmet consists of earphones and a microphone. The helmet is made of sturdy plastic. It has a safety filter to protect it from the strong rays of the sun.
Why is National Science Day celebrated?
Sarika told that Sir Chandrashekhar Venkat Raman made public his important discovery Raman effect on 28 February 1928. For his discovery, he was awarded the Nobel Prize in Physics in 1930. To remember his success, National Science Day is celebrated every year on 28 February in India. The theme for 2023 is ‘Global Science for Global Wellbeing’.
The first Science Day was celebrated on 28 February 1987. The purpose of celebrating this is to pay respect to Sir CV Raman, to make common people aware of science, to explain the importance of science, to encourage children to choose science as a career.