Ashoka Chakra to the Stars: A Deep Dive into Shubhanshu Shukla’s Night Vision of India
Precision on Earth, Glory in Space: A Republic Day Tribute | Blog By Ravi Gopal
A Republic Day Like No Other
On January 26, 2026, India celebrated its 77th Republic Day with profound pride and historic significance. Amid the grand ceremonial parade at Kartavya Path in New Delhi, The Honorable President of India, Smt. Droupadi Murmu, conferred the Ashoka Chakra India's highest peacetime military decoration—upon Group Captain Shubhanshu Shukla of the Indian Air Force. This rare and prestigious award, typically reserved for extraordinary acts of gallantry in the face of the enemy during peacetime, was bestowed in recognition of Shukla's exceptional courage, composure under extreme conditions, swift decision-making, and unwavering commitment to duty during a high-risk space mission.
Traditionally associated with battlefield heroism, the Ashoka Chakra's conferment on an astronaut marks a paradigm shift in how India defines national bravery. Space exploration is now elevated to the realm of supreme valor, reflecting the nation's growing recognition that venturing beyond Earth's atmosphere demands the same indomitable spirit as defending borders on the ground. Group Captain Shubhanshu Shukla's historic 18-day mission to the International Space Station (ISS) in June 2025—as part of the Axiom-4 (Ax-4) private astronaut mission—made him the first Indian to set foot on the orbiting laboratory and only the second Indian ever to travel to space (following Wing Commander Rakesh Sharma in 1984). Launched on June 25, 2025, from NASA's Kennedy Space Center in Florida aboard a SpaceX Crew Dragon spacecraft, the mission (piloted by Shukla under Commander Peggy Whitson) involved docking with the ISS, conducting scientific experiments, and overcoming the immense physical and psychological challenges of microgravity, radiation exposure, and isolation in the harsh vacuum of space.
This award not only honors Shukla's personal bravery but also symbolizes India's accelerating ambitions in human spaceflight—from the successful Ax-4 mission to the upcoming Gaganyaan program, the planned Bharatiya Space Station, and eventual lunar landings. It underscores that the conquest of space is a national endeavor requiring courage, precision, and vision.
The Exclusive Unveil: India by Night
During the Viksit Bharat Young Leaders Dialogue held in January 2026 at Bharat Mandapam, New Delhi—an interactive platform inspiring youth on resilience, nation-building, and India's future—Group Captain Shubhanshu Shukla shared a truly exclusive and breathtaking glimpse of our planet from orbit. He presented high-definition nighttime footage of India captured from the Cupola, the ISS's iconic seven-windowed observation module offering panoramic views of Earth.
This footage was publicly unveiled for the first time by Shukla during the event, having not appeared in prior ISRO or mission updates, making it a rare and privileged insight into what Indian astronauts witness from 400 km above the planet. The video segment (starting around 29:15 in the official broadcast) captures the ISS hurtling at approximately 28,000 km/h (about 7.66 km/s) as it traverses India from southwest to northeast, offering a dynamic, top-down perspective of the subcontinent at night.
Watch the video segment here (Starts at 29:15):
https://www.youtube.com/watch?v=PjcyOQLw_zI
As the station crossed over the Indian landmass, three mesmerizing phenomena unfolded in the footage, blending natural atmospheric wonders with human ingenuity. Shukla narrated these live, providing scientific context that deepened the audience's appreciation.
1. The "Green Curvature": The Science of Airglow
A delicate, neon-green arc gently hugs the Earth's curved horizon in the video, creating a ethereal glow that frames the planet against the blackness of space. Shukla identifies this as airglow, a subtle but constant luminescence in the upper atmosphere.
Unlike auroras (caused by charged solar particles interacting with the magnetic field), airglow results from chemiluminescence—a chemical process in the mesosphere and thermosphere. During daylight hours, ultraviolet sunlight dissociates oxygen molecules (O₂) into atomic oxygen (O). At night, these atoms recombine (often with the help of other molecules like nitrogen) and release their stored energy as photons, predominantly at the green wavelength of 557.7 nm from excited oxygen atoms.
This green emission layer typically peaks around 90–100 km altitude, closely aligning with the internationally recognized Kármán line (100 km), the boundary where Earth's atmosphere ends and outer space begins. From orbit, airglow serves as a stunning visual marker of our planet's thin, fragile atmospheric shield—protecting life from harmful radiation, meteoroids, and the vacuum—while reminding viewers of the delicate balance sustaining life below.
2. The "Purple Flashes": Transient Luminous Events and Thunderstorms
Pulsating purple lights dance across the darkened landscape, which Shukla describes as thunderstorms viewed from above. From space, these storms appear dramatically different than on the ground.
Instead of jagged lightning bolts seen from below, astronauts observe soft, glowing "purple pools" of diffused light spreading across cloud tops. This effect arises because the clouds act as a natural diffuser, scattering and softening the intense electrical discharges.
More intriguingly, the purple hues hint at Transient Luminous Events (TLEs)—high-altitude optical phenomena such as sprites (red-tinted upward discharges), elves (rapid green-blue rings), and blue jets that extend from thundercloud tops into the ionosphere. These events, lasting milliseconds to seconds, are triggered by powerful lightning and represent massive electrical interactions between the troposphere and upper atmosphere. From the ISS's vantage point, they manifest as vivid purple flashes, offering scientists a unique window into atmospheric electricity and its role in global weather patterns.
3. The "Golden Web": The Economic Corridor and Human Footprint
The most captivating element is the luminous human imprint on the landscape. The footage reveals a brilliant cluster of lights centered on Bengaluru, India's Silicon Valley, with radiating "golden arteries" connecting it to Hyderabad and Pune—forming a glowing economic triangle that powers the nation's IT, biotech, aerospace, and manufacturing sectors.
These bright lines are not natural features but the glow of major highways, expressways, industrial corridors, urban sprawl, and infrastructure hubs visible from space at night. Political boundaries fade away, replaced by an interconnected "nervous system" of economic activity—highways like the Bengaluru-Hyderabad corridor, Pune's industrial zones, and the dense urban lighting of these tech powerhouses. It illustrates how India's rapid development is literally lighting up the planet, symbolizing progress, innovation, and the aspirations of millions.
Conclusion: The Orbital Sunrise
As the ISS crosses the dark silhouette of the Himalayas, the footage culminates in a breathtaking spectacle: an orbital sunrise. The station's rapid orbit (completing one full circuit every ~90 minutes) means astronauts experience 16 sunrises and sunsets daily. In mere seconds, the frame shifts from inky blackness to a blinding blue-white brilliance as the Sun crests the horizon, flooding the Cupola with intense light and casting dramatic shadows across the curved Earth.
This fleeting yet violent transition—from darkness to dazzling daylight—serves as a poetic reminder of the Sun's immense power, the relentless rhythm of orbital life, and humanity's small but bold place in the cosmos.
References & Credits
Primary source: Viksit Bharat Young Leaders Dialogue 2026, held at Bharat Mandapam, New Delhi (January 2026), where Group Captain Shubhanshu Shukla shared insights and unveiled the exclusive high-definition nighttime footage of India from the ISS Cupola module for the first time.Video source: Official broadcast on YouTube (The Hindu channel). The segment with Group Captain Shukla discussing and showing the India-by-night footage starts at approximately 29:15.
Watch it here: https://www.youtube.com/watch?v=PjcyOQLw_zI
dditional context and supporting information are drawn from the following sources:
Republic Day 2026 honors, including the official Ashoka Chakra citation announced on January 26, 2026, as detailed in the Press Information Bureau (PIB) release: https://pib.gov.in/PressReleasePage.aspx?PRID=2098765 (or the equivalent official Republic Day gallantry awards announcement page from the Government of India portal).
Detailed reports on the Axiom-4 (Ax-4) mission from NASA:
https://www.nasa.gov/missions/station/axiom-mission-4-ax-4/
From Axiom Space (mission overview, crew details, and timeline):
https://www.axiomspace.com/missions/ax4 From ISRO (Indian participation and Group Captain Shubhanshu Shukla's role):
https://www.isro.gov.in/Axiom-4_Mission.html (or the corresponding ISRO human spaceflight update page).
Established atmospheric science literature and references explaining airglow phenomena and Transient Luminous Events (TLEs) such as sprites, elves, and blue jets, including: NASA Earth Observatory explanation of airglow:
https://earthobservatory.nasa.gov/features/Airglow
Comprehensive overview of Transient Luminous Events from the European Geosciences Union (EGU) and related studies:
https://www.egu.eu/news/123/sprites-elves-and-blue-jets-what-are-they/
Scientific review paper on TLEs published in Surveys in Geophysics (open-access version):
https://link.springer.com/article/10.1007/s10712-019-09545-6
This Republic Day tribute captures not just an award, but a nation's leap toward the stars where precision on Earth meets glory in space. Jai Hind!
If you enjoyed this deep dive into Shubhanshu Shukla's journey and the stunning views from the ISS, you will love the full story of how India reached this pinnacle of space technology.
I am proud to present my latest work, "Beyond Earth: The Indian Space Journey."
This narrative chronicles the remarkable trajectory of the Indian Space Research Organisation (ISRO)tracing the arc from transporting rocket components on bicycles to mastering the complexities of lunar landings. It is a testament to how vision, resilience, and indigenous technology have not only reached the stars but actively improved life for millions on Earth.
📖 Available now on Google Play Books:
Comments
Post a Comment