Subtext by Zerodha

Suyash Singh on finding spaces in the space business

Episode Summary

In this episode, we sit down with the founder of GalaxEye to explore one of the most audacious bets in Indian deep tech: building a satellite that can see through clouds. We go deep on the technology behind Optical SAR (OptiSAR) — a fusion of multi-spectral imaging and synthetic aperture radar — and why consistent, all-weather satellite imagery could be as transformative as GPS.

Episode Notes

We cover:

- Why 70% of earth is always covered by clouds — and why that breaks most satellite imagery businesses

- What synthetic aperture radar (SAR) is, and how it lets you see through clouds, fog, and even forests

- The $0 → launch journey: 5 years of R&D, drone testing, and programme management

- How GalaxEye miniaturised its sensor stack and tested it on drones before going to space

- The real customers for satellite data (hint: it's not farmers — yet)

- What it's actually like to book a launch on SpaceX and ship a satellite from Bangalore to Florida

- India's space policy reforms and the rise of IN-SPACe

- The one metric India's space ecosystem isn't tracking — but should be

If you've ever been curious about what it takes to send something into orbit and build a business around it, this one's for you.

 

Timestamp: 

0:00 Introduction

2:29 Why Would Anyone Start a Space Business?

4:02 The Origin Story

11:33 The Big Idea: Opto-SAR & Consistent Satellite Imagery

23:44 What You Can Unlock by Combining SAR + Optical

27:26 India's Space Policy Reform & The Rise of IN-SPACe

33:13 Building the Satellite: 5 Years from Idea to Orbit

46:50 Funding a Deep Tech Startup Before Revenue

52:13 How R&D Should Work in Indian Industry

47:06 The Real Challenges of Operating in Space

51:10 Booking a Launch with SpaceX

55:11 The Emotional Reality of Launch Day

1:06:44 Mapping India's Space Industry: Where We Stand

1:10:56 GalaxEye's Long-Term Vision