His advice to young astrophiles is typical of his no-nonsense yet hopeful style: "Do not wait for a perfect dark sky. Go out now with binoculars. Learn orbital mechanics on a napkin. And never stop asking who owns the stars." In an era of billionaires racing to space and AI scanning for alien technosignatures, Aswin Sekhar represents the conscience of astronomy. He is not the loudest voice, nor the most prestigious chair-holder, but he is one of the most integrated thinkers. He connects the Tunguska blast of 1908 to the Starlink launch of 2024. He links the search for Venusian microbes to the protection of Himalayan observatories.
In a series of rigorous papers, Aswin Sekhar brought modern computational fluid dynamics and orbital back-integration to bear on the century-old mystery. His work suggested that the Tunguska impactor was likely a low-density, fragile asteroid (a "rubble pile") rather than a comet. More importantly, he modeled how such objects fragment in Earth’s atmosphere—models that now inform planetary defense strategies. aswin sekhar
If you follow modern space science, you may have seen his name attached to studies about the Tunguska event, the search for phosphine on Venus, or passionate op-eds about satellite "megaconstellations." But who is Aswin Sekhar, and why is his voice becoming increasingly vital in 21st-century astronomy? Born and raised in Kerala, India, Aswin Sekhar’s journey into the stars began on the humid, often-clouded nights of the Malabar Coast. Unlike many astronomers who grew up with pristine dark skies, Sekhar learned to chase clarity through persistence. He completed his Master’s in Physics from the University of Hyderabad, a breeding ground for India’s finest scientific minds. His advice to young astrophiles is typical of
In the vast, silent expanse of the cosmos, threats and wonders often arrive unannounced. While most of us gaze at the stars with casual wonder, a select few dedicate their lives to interpreting their dangerous whispers. One such individual is Aswin Sekhar , an Indian-born astronomer and planetary scientist whose work sits at the critical intersection of astrobiology, asteroid impacts, and the preservation of Earth’s night sky. And never stop asking who owns the stars
Sekhar has coined the term "orbital light pollution" to describe the cumulative effect of satellite trails on professional observatories. His unique contribution is linking this to . He asks: If we cannot see the Milky Way from Earth because of artificial satellites, how will future generations develop a cosmic perspective? How will we detect faint, potentially biogenic signals from exoplanets if our instruments are saturated by reflections from LEO debris?