Copenhagen Suborbitals

Copenhagen Suborbitals is a crowdfunded non-profit suborbital human space program, crewed only by volunteers working towards human spaceflight in our sparetime.

[Copenhagen Suborbitals @CopSub]

This day in 2011: HEAT-1X launched, making history in our quest for crewed, crowdfunded spaceflight by proving:
🚀 Sea launch of 65kN hybrid rocket
📡 Manual flight termination
👩‍🚀 Clean separation of human-sized space capsule
🚢 Capsule recovery at sea

https://t.co/QwqKhkMEM5

[Copenhagen Suborbitals @CopSub]

This day in 2018 we successfully performed the World's first human skydive test under a triple-cluster parachute with 2 stage unreefing. We'll use a similar system to recover our crewed Spica rocket booster, so this was a significant milestone. Video: https://t.co/Q4uB6SYHtC⠀

[Copenhagen Suborbitals @CopSub]

Did you know you have helped support six of our rocket launches so far?
This is Nexø II, our sixth one in 2018. Our first fully recovered and possibly reusable rocket! Thank you for being part of it!

Learn more about the Nexø II mission on our webpage: https://t.co/MYQNZfE7J4

[Copenhagen Suborbitals @CopSub]

Test cancelled today.
Turns out we forgot to pay this month's No-Clouds license fee, so the Gods of Angry Clouds rolled in and cast their spell over HCA Airport.

Slim chance tomorrow. If not, we'll lock in a new date soon.

[Copenhagen Suborbitals @CopSub]

GO for parachute test. Weather's clear - tomorrow we test the Valkyrie Ring Sail main again. Copenhagen Trackers rides along in case it wanders.
A parachute can wander. It cannot hide.

#CopenhagenSuborbitals

[Copenhagen Suborbitals @CopSub]

Come visit us. We have rockets! 🚀 Tours every Saturday in Copenhagen.

Learn about our road to sending a person to space, see how we build our rockets and spacecraft, and touch them.

Pick a date and grab your space capsule seat: https://t.co/feYME5vcJp

[Copenhagen Suborbitals @CopSub]

Parachute test Saturday in Odense. First one in a long time.
Goal: 100% rapid reusability of our astronaut™

Parachute by Valkyrie Recovery Systems, thanks!
Testing for smoother deployment - better when someone is hanging under it.

Weather permitting. Sunday is backup.

[Copenhagen Suborbitals @CopSub]

Did you know you've helped support six of our rocket launches so far?
This is Nexø I, our fifth one from 2016. It proved we could fly a bi liquid, actively guided rocket, thanks to your support.

To learn more about this specific mission go to our webpage: https://t.co/XpxIR64CNR

[Copenhagen Suborbitals @CopSub]

Fancy a seat in a space capsule and learn about rockets? We still have open spots for this weekend's tour of our rocket shop where you get to touch real rocket hardware.

Grab your seat: https://t.co/feYME5vcJp

Rescue Randy's smile tells you how comfy it is. 😊

[Copenhagen Suborbitals @CopSub]

Oliver fits the seat. The harbour is on the horizon.

This is the work that happens before the drop test.
YouTube: https://t.co/lV8KObW1DT

[Copenhagen Suborbitals @CopSub]

Did you know you've helped support six of our rocket launches so far?
This: Tycho Deep Space, our 3rd one from 2013. It tested a launch escape system on a space capsule, thanks to your support.
To learn more about this specific mission go to our webpage: https://t.co/Ge8TXc8wLN

[Copenhagen Suborbitals @CopSub]

Congratulations to Joris de Vries - this month's Mission Crew draw winner! A Remove Before Flight key ring and key hanger heading his way. Join the crew:

https://t.co/oPOi9cGSIu

[Copenhagen Suborbitals @CopSub]

Did you know you have helped support six of our rocket launches so far?
This is Sapphire, our fourth one, from 2013. Sapphire was our first actively guided rocket, all thanks to you!

Learn more about Sapphire and its GNC on our webpage: https://t.co/n8w8aKunTq

[Copenhagen Suborbitals @CopSub]

"Boy Scouts on steroids"
That’s how one of our guests described us - we’ll take it!
We are 100% crowdfunded and 100% volunteer-run. When you book our tour, you are stepping into a working workshop where real people are building rockets.

Book your visit: https://t.co/feYME5vcJp

[Copenhagen Suborbitals @CopSub]

On this day in 1961, Alan Shepard flew 15 minutes suborbital and became the first American in space.

Blue Origin named their rocket after him. We're building ours from scratch. We're just volunteers.
Same destination. Different path.

https://t.co/oPOi9cGSIu

[Copenhagen Suborbitals @CopSub]

@TimWrede2 That’s a discussion to take in a Galaxy far far away

[Copenhagen Suborbitals @CopSub]

May the 4th be with you.

We don't need the Force. Our Death Star is behind schedule and we've run out of duct tape.

— The volunteers 🚀 #CopSub

[Copenhagen Suborbitals @CopSub]

Mission log, May 2026: Draw complete. Winner identified. Email dispatched.
If you're part of the Mission Crew — your inbox may require attention.

Not in the crew yet?
This could be you next month. https://t.co/oPOi9cGSIu

[Copenhagen Suborbitals @CopSub]

Did you know you have helped support six of our rocket launches so far?
This is Smaragd, our second one, from 2012. It had two stages. 🚀🚀 Thank you for letting us share it with you!

Learn more about the Smaragd mission on our webpage: https://t.co/c13d1bKbzf

[Copenhagen Suborbitals @CopSub]

This failed engine test brings some *ahem* "warm" memories... We share many such less-and-more-successful memories during our weekly rocket factory tours, while showing you our latest rocket production in action. Dates and booking. 👉https://t.co/feYME5vcJp