Particle.news

Download on the App Store

Shubhanshu Shukla’s ISS Video Explains Weightlessness as “Perpetual Free Fall”

India’s first ISRO-linked visitor to the ISS posts a clip that teaches orbit as constant free fall under near‑Earth gravity.

Overview

  • Posting on X on September 23, Shukla shared a short ISS video of himself changing a camera lens with the caption, “Believe it or not—Everything you see in this frame is falling.”
  • He explains that gravity at the station remains about 90% as strong as on Earth, and astronauts feel weightless because they and nearby objects are falling together around the planet.
  • In the clip, the released lens hovers rather than dropping, which he says demonstrates that there is no relative falling and therefore no sense of “down” in orbit.
  • He connects the explanation to Isaac Newton’s thought experiment of a fast-thrown ball that keeps circling Earth, describing orbit as falling forever without hitting the ground.
  • Coverage notes his July 2025 Axiom-4 trip made him the first ISRO-affiliated astronaut to visit the ISS, and social media reactions praise the clear, accessible lesson.