A privately developed Australian rocket is ready for a historic launch

With its first launch, Gilmour Space is "looking for 10 to 20 seconds of stable flight."

May 14, 2025 - 21:08
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A privately developed Australian rocket is ready for a historic launch

Gilmour Space, a venture-backed startup based in Australia, is about to launch a small rocket from its privately owned spaceport on a remote stretch of the country's northeastern coastline.

It's the first time anyone has attempted to reach orbit with a rocket designed and built in Australia. Gilmour's three-stage rocket, named Eris, could launch at any time during a 10-hour window Thursday, local time. In the United States, the launch window runs from 5:30 pm EDT Wednesday until 3:30 am EDT Thursday.

The debut launch of Gilmour's Eris rocket is purely a test flight. Gilmour has tested the rocket's engines and rehearsed the countdown last year, loading propellant and getting within 10 seconds of launch. But Gilmour cautioned in a post on LinkedIn early Wednesday that "test launches are complex." Gilmour added on social media that "weather, systems checks, or technical issues may delay the flight—sometimes by hours, days, or longer."

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