Garrett Reim
October 17, 2025

rocket engine testing firing

The startup is fueling its rocket engines with liquid methane.

Credit: Interstellar Technologies

Amid stables for 1,400 dairy cows, a tanker truck empties its load: a liquid stream of manure that pours out, flows into a trough, then into a pipe that leads to a giant bubbling vat. Eventually, this will become the element that propels hopes and dreams—otherwise known as rocket fuel. Interstellar…

Garrett Reim

Based in the Seattle area, Garrett covers the space sector and advanced technologies that are shaping the future of aerospace and defense, including space startups, advanced air mobility and artificial intelligence.

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