Indian-origin NASA astronaut Sunita Williams (Suni) has been dubbed as the \”stranded astronaut\” over his stay in space since June last year. Ms Williams and her fellow astronaut Barry (Butch) Wilmore have been at the International Space Station (ISS) for several months. The astronaut has also taken a long spacewalk, also called an extra vehicular activity (EVA), and has completed 62 hours and nine minutes on the activity. She has also done some tests and experiments on her own physiology to have a better understanding of how the body reacts to the space environment. The ISS is possibly the single-most expensive engineering experiment ever to be undertaken by humans. It has continuously been inhabited by humans for the last 25 years and is nearly 400 kilometres above the Earth. The 59-year-old has spent over 600 days in space so far, for three different missions, and is likely to be back on Earth in the next few weeks. She is the first woman astronaut to test a space capsule and has also sent Diwali, Christmas and New Year greetings to humans on Earth. She even wished the participants of the 2024 Paris Olympics good luck from space. According to NASA, Ms Williams, Mr Wilmore and another astronaut, Nick Hague, \”completed more than 900 hours of research between over 150 unique scientific experiments and technology demonstrations during their stay aboard the orbiting laboratory\”