NASA Astronaut Sunita Williams Retires After Nearly Three Decades of Spaceflight Service

SCIENCE NASA Astronaut Sunita Williams Retires After Nearly Three Decades of Spaceflight Service Newsyaar January 27, 2026 7:00 pm     NASA astronaut Sunita “Suni” Williams has formally retired after a distinguished 27-year career with the United States space agency, closing a chapter that spans some of the most significant phases of modern human spaceflight — from the Space Shuttle programme to the International Space Station (ISS) and the emergence of commercial crew missions.   NASA announced her retirement in late 2025, acknowledging Williams’ extensive contributions to space exploration, mission leadership, astronaut training and long-duration human spaceflight operations.   Early Life and Professional Background   Born on September 19, 1965, Sunita Williams is of Indian-Slovenian descent and grew up in the United States. She graduated from the United States Naval Academy with a degree in physical science and later earned a master’s degree in engineering management from the Florida Institute of Technology.   Before joining NASA, Williams served as a commissioned officer in the US Navy, where she became a helicopter pilot and later a test pilot, flying more than 30 aircraft types. Her operational and technical experience in aviation played a key role in her selection as an astronaut.   Selection as NASA Astronaut   Williams was selected as part of NASA’s 1998 astronaut class, one of the agency’s most competitive intakes. She underwent extensive training in spacecraft systems, robotics, spacewalks, Russian language and survival operations — a reflection of NASA’s increasingly international mission structure at the time.   Her training coincided with the early assembly years of the International Space Station, positioning her at the forefront of long-duration orbital missions.   Space Missions and Time in Orbit   Over the course of her career, Williams flew on three space missions, spending a cumulative 608 days in space, making her one of NASA’s most experienced astronauts in terms of time spent in orbit.   Her first spaceflight came in 2006 aboard Space Shuttle Discovery (STS-116), where she joined Expedition 14 and later Expedition 15 aboard the ISS. During this mission, she played a major role in station construction and systems maintenance.   Williams returned to the ISS in 2012 as part of Expedition 32, later assuming command during Expedition 33, becoming one of the few astronauts — and one of the few women — to lead the orbiting laboratory.   Record-Breaking Spacewalks   One of Williams’ most notable achievements was her contribution to extravehicular activity (EVA). She conducted nine spacewalks, accumulating over 62 hours outside the ISS — a record for the most spacewalk time logged by a woman astronaut at the time.   Her spacewalks involved complex tasks such as station assembly, repair of external systems, installation of scientific instruments and upgrades to power and cooling infrastructure critical to ISS operations.   Leadership and Scientific Contributions   As Commander of the ISS, Williams was responsible for crew safety, operational coordination, scientific mission execution and liaison with ground teams across multiple countries. Her tenure coincided with an intensive research phase aboard the station, with experiments spanning human physiology, material science, fluid dynamics and Earth observation.   NASA officials have consistently cited her leadership style, operational discipline and technical proficiency as instrumental in sustaining continuous human presence aboard the ISS.   Role in Commercial Crew and Training   In the latter part of her career, Williams supported NASA’s transition toward commercial crew programmes, contributing to astronaut training, mission evaluations and operational readiness planning. Her experience across different spacecraft platforms made her a valuable resource during this transitional period.   She was also involved in mentoring younger astronauts and supporting mission simulations, ensuring continuity of institutional knowledge within NASA’s astronaut corps.   Retirement and Post-Service Benefits   Williams retired at the age of 60, making her eligible for federal retirement benefits based on years of service. According to public disclosures, retired NASA astronauts receive pensions under standard US federal employee retirement systems, along with healthcare and post-service benefits.   While she has not announced formal post-retirement plans, retired astronauts often continue contributing through education, public engagement, advisory roles, research collaborations and private-sector aerospace initiatives.   Legacy and Impact   Sunita Williams’ retirement marks the end of a career that bridged multiple eras of US space exploration. Her achievements place her among the most accomplished astronauts in NASA history, particularly in the areas of long-duration missions, spacewalk operations and international cooperation aboard the ISS.   Her career has also held symbolic importance for aspiring scientists and engineers worldwide, particularly in India and among the global Indian diaspora, where her achievements have long been followed with pride.   As NASA prepares for future missions to the Moon, Mars and beyond, Williams’ contributions remain embedded in the operational foundations of long-duration human spaceflight.   About the Author Science Reporter Share via Copied Comments Post Comment

Alaknanda: Indian Astronomers Discover a Milky Way–Like Galaxy from the Universe’s Youth

SCIENCE Alaknanda: Indian Astronomers Discover a Milky Way–Like Galaxy from the Universe’s Youth Newsyaar January 27, 2026 6:07 pm     Indian astronomers have made a discovery that could rewrite prevailing theories of galaxy formation, after identifying a massive, well-structured spiral galaxy dating back nearly 12 billion years. Named Alaknanda, after the Himalayan river, the galaxy was observed when the Universe was only about 1.5 billion years old, just 10% of its current age of 13.8 billion years.   The discovery was made using data from the James Webb Space Telescope (JWST) by Rashi Jain, a PhD researcher at the National Centre for Radio Astrophysics (NCRA), part of the Tata Institute of Fundamental Research in Pune, under the supervision of Professor Yogesh Wadadekar. Their findings were published in the prestigious European journal Astronomy and Astrophysics in November.   What makes Alaknanda extraordinary is its structure. According to current models, galaxies that formed so soon after the Big Bang were expected to be small, irregular, and chaotic, still assembling their mass through violent mergers. Instead, Alaknanda appears as a fully formed spiral galaxy, complete with a central bulge and two symmetric spiral arms, remarkably similar to the Milky Way.   Ms Jain discovered the galaxy while analysing nearly 70,000 objects captured by JWST. “There was only one grand-design spiral galaxy in the entire dataset,” she said. Spanning around 30,000 light-years, Alaknanda shows classic spiral features, including a distinctive “beads-on-a-string” pattern, clusters of stars aligned along its spiral arms, commonly seen in nearby mature galaxies.   Professor Wadadekar admitted his initial reaction was disbelief. “It’s astonishing how such a large galaxy with spiral arms could have existed just 1.5 billion years after the Big Bang,” he said. Scientists estimate that Alaknanda had already formed nearly 10 billion times the mass of the Sun in stars, while also developing a stable rotating disc, an achievement that should have taken much longer according to existing cosmic timelines.   The implications of this discovery are significant. It suggests that some galaxies in the early Universe evolved far more rapidly and efficiently than previously thought. The presence of such an organised structure so early challenges assumptions about the pace of star formation, the role of dark matter, and the mechanisms that lead to spiral arm formation.   For Indian astronomy, the finding marks a major milestone, showcasing the country’s growing role in cutting-edge space research enabled by global observatories like JWST. For cosmology as a whole, Alaknanda opens new questions about how order emerged so quickly from the apparent chaos of the early Universe, and whether other such hidden spirals are waiting to be found.   About the Author Science Reporter Share via Copied Comments Post Comment

Madhavi Latha: The Engineer Behind the World’s Highest Rail Bridge

SCIENCE Madhavi Latha: The Engineer Behind the World’s Highest Rail Bridge     When the Chenab Rail Bridge, the world’s highest railway bridge, stands tall amid the rugged Himalayas, it represents more than an engineering marvel. It tells the story of Dr. G. Madhavi Latha, the engineer whose expertise and vision played a pivotal role in turning an impossible idea into reality. She has also been awarded the NDTV Science Icon of the Year Award.   Towering at 359 metres above the Chenab River in Jammu and Kashmir, the bridge is higher than the Eiffel Tower and is one of India’s most ambitious infrastructure projects. Designed to withstand extreme winds, earthquakes, and challenging geological conditions, the Chenab Bridge is a symbol of modern India’s engineering strength, and Dr. Madhavi Latha was at the heart of it.   A professor at IIT Madras, Dr. Madhavi Latha, served as the geotechnical consultant for the project. Her role was crucial: the bridge stands in a highly seismic zone with fragile rock formations and unpredictable terrain. Traditional construction methods were not enough. Innovative geotechnical solutions were required to stabilise slopes, design foundations, and ensure long-term safety in one of the most hostile environments imaginable.   Dr. Latha and her team worked extensively on slope stabilisation, foundation design, and rock reinforcement, addressing landslide risks and geological uncertainties. What made the challenge even greater was the remoteness of the site, harsh weather conditions, and limited accessibility. Despite these obstacles, her scientific approach and practical problem-solving ensured that the bridge could safely support high-speed trains while enduring nature’s extremes.   Beyond its technical brilliance, Dr. Madhavi Latha’s contribution carries deep symbolic value. In a field traditionally dominated by men, her leadership and expertise have made her an inspiration for young engineers across India. She has often spoken about how the project demanded patience, collaboration, and unwavering commitment, qualities as critical as technical knowledge.   The Chenab Rail Bridge is a vital link in the Udhampur–Srinagar–Baramulla Rail Line (USBRL) project, aimed at improving connectivity, mobility, and development in Jammu and Kashmir. Its completion marks a major milestone in India’s infrastructure journey.   Dr. Madhavi Latha’s story reminds us that behind every iconic structure lies human effort, intellect, and resilience. As trains begin to cross the world’s highest rail bridge, they carry with them not just passengers, but the legacy of an engineer who redefined what was possible.   About the Author Science Reporter Share via Copied Comments Post Comment