Startup

Tumbleweed

Microgravity for your research, as easy as mailing a package, starting at €15,000

SpaceTech
Vienna, Austria
Seed

About Tumbleweed

Tumbleweed is a Vienna-based space infrastructure company, with a second office in Delft, that gives researchers and manufacturers access to microgravity. Customers put their experiments into Pod, a standardised payload container, and Tumbleweed flies it on its Oasis orbital platform. The company handles certification, launch and operations. Its first mission, Oasis Alpha, launched on SpaceX Transporter-17 in July 2026 and was billed as Austria's first commercial satellite. The next mission, Oasis Beta, is planned to add sample return.

Founders

Guillaume Brault
Co-Founder & CTO
Space engineer who worked at Thales Alenia Space, Rocket Lab and TNO; leads hardware and mission design.
Julian Rothenbuchner
Co-Founder & CEO
Aerospace engineer and entrepreneur who leads partnerships and strategy at Tumbleweed.
Leonhard Goliasch
Co-Founder & COO
Runs operations and business development and leads the scaling of the company.