Fire up! Following completion of load testing last week, the first stage for Hydrogen’s second flight completed an 85-second firing in preparation for flight. The first stage will now be prepared for transport to Sriharikota.

Hydrogen is going reusable. Starting with Flight 2, we will begin trying to recover Hydrogen’s first stage via parachute. The stage can return to both a splashdown or a land landing, increasing flexibility across missions.

Coming up real soon - the launch of the first batch of EarthComms satellites! 4 EarthComms satellites are going to ride up to space on @EclipseSpaceKSP’s Helix rocket! Stay tuned for updates as we get closer to yet another exciting milestone!

Views of Hydrogen as it lifted off for its maiden flight yesterday.

Today, we launched Hydrogen’s first flight, with the ambitious goal of reaching orbit. Even though we fell short of that goal, we achieved all three of our main goals - liftoff, clearing the tower and stage separation. And as a bonus, we even got to space. (1/3)

We have experienced an anomaly during the final phase of the second stage burn. The second stage separated and the kickstage ignited, however, the sequence was anomalous. Stay tuned for more updates.

Under 10 minutes till liftoff! Watch the launch and follow along from the livestream link on our pinned post!

4 hours and counting till Hydrogen's maiden flight. All systems continue to be nominal ahead of today's flight, and weather is ~85% favourable. We are aiming for liftoff at 5:24 PM IST. youtu.be/EeEmzQ-Jzmw

Watch Hydrogen’s maiden flight. The webcast starts about 8 minutes before liftoff. youtu.be/EeEmzQ-Jzmw

During the countdown to Hydrogen’s maiden flight earlier today, teams encountered an issue with the umbilical arm of the second stage. As a result, we are standing down from today’s launch attempt. We are now targeting Saturday, October 10, 2026, 5:30 PM IST for liftoff.

With only 24 hours left until the launch of Hydrogen, here’s everything you can expect from tomorrow’s flight. Our main goal for this flight remains to achieve liftoff, clear the tower and get to stage separation.

One final journey. Over the morning, teams rolled out Hydrogen, now with its payload attached to our Commercial Launch Pad at Sriharikota. Teams have confirmed that Hydrogen and EarthComms-0 remain in good health. T-48 hours and counting.

On Sunday, teams completed encapsulation of EarthComms-0 inside the fairing! Earlier today, teams hoisted up the fairing and EarthComms-0 and stacked it atop the kickstage - completing the Hydrogen stack for the maiden flight!

While Hydrogen’s maiden flight is on the horizon, the first stage and second stage for Hydrogen’s second flight have already begun load testing at our facilities in Bangalore, ahead of launch NET November.

Targeting Friday, October 9, 2026, for the maiden launch of Hydrogen. The 20-minute launch window opens at 5:25 PM IST, with backup opportunities available on October 10 and 11, with launch windows starting at the same time.

With this test complete, the next steps for Hydrogen will be a rollback to the integration facility, getting EarthComms-0 attached and then rolling back to the launch site for launch! Launch date announcement coming tomorrow 👀👀

The test concluded with a simulated T0: Both first stage umbilical arms and the second stage umbilical arm were released, concluding the launch rehearsal.

We also loaded the liquid-fueled second stage of Hydrogen with propellant. This video is a timelapse of the prop-loading sequence. We also tested the electrical connects of the second stage.

Launch rehearsal complete! Yesterday, teams conducted a 10-hour-long launch rehearsal of Hydrogen ahead of its maiden flight, with the countdown initiating at around T-10 hours.