SaxaVord in Unst is the UK’s first fully-licensed spaceport with several companies interested in using the site to launch small satellites into orbit.
In September, the UK government announced investment of £30m in the project, as part of a new £7.8bn space strategy.
Alistair Carmichael said the spaceport would draw more attention to Shetland as a significant asset.
The German and UK governments plan to use SaxaVord to deepen their co-operation on space.
In October, Prime Minister Andy Burnham and Chancellor Friedrich Merz met in Berlin, announcing plans to work more closely on economic growth, defence and technology.
SaxaVord Spaceport was identified as a focus for immediate work on European launches.
Two German companies are currently in a race to be the first to test a rocket in Shetland.
Chief executive Scott Hammond said: “The space strategy is absolutely critical.
“We’re at the heart of the UK government’s plans for assured access to space.
“That’s also for our economic and Nato partners.”
He added that the UK government had joined as one of its majority investors, with a member on the board, but stressed that SaxaVord Spaceport was still a private commercial company.
