Relativity Space is prepared to attempt its first liftoff once more.

The business intends to launch Terran 1, the first 3D-printed rocket, on March 22 within a three-hour window starting at 10 p.m. EDT from Florida's Cape Canaveral Space Force Station (0200 GMT on March 23).

You can witness the orbital test trip, known as "Good Luck, Have Fun" or GLHF for short, thanks to Relativity Space, here on Space.com or directly through the business.

The anticipated liftoff tonight will be the third attempt to launch GLHF. Because to problems with fuel temperature on the top stage of the two-stage Terran 1, the first attempt on March 8 was scrubbed.

On March 11, Relativity Space attempted again but was hindered by delays due to weather and range safety, as well as two consecutive aborts.

The first 3D-printed rocket in the world is the 110-foot-tall (33-meter) Terran 1. The GLHF car is around 85% 3D-printed by mass, and the business hopes to increase that percentage to over 95% on future models.

Relativity Space estimates that the disposable Terran 1 is capable of carrying up to 2,756 pounds (1,250 kilogrammes) to low Earth orbit (LEO). Liquid methane serves as the launcher's fuel, while liquid oxygen serves as its oxidizer. The Terran 1 rocket will become the first "methalox" rocket to ever reach Earth orbit if it succeeds tonight.

GLHF is a test mission for Relativity Space, a company located in California that was established in 2016 by Tim Ellis and Jordan Noone, both of whom had previously worked for Blue Origin. (No one also spent time at SpaceX.) During tonight's expedition, the Terran 1 is just carrying a little 3D-printed ring for souvenir purposes.

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Relativity Space will have a tonne of data to examine regardless of how Terran 1 does on GLHF. Such research could also guide the creation of the company's reusable Terran R launch vehicle, which might make its first flight as early as next year and is intended to carry up to 44,100 pounds (20,000 kg) to low-Earth orbit.

Representatives of Relativity Space told Space.com in an email before to launch that "Terran 1 acts as a pathfinder and development platform on our way to Terran R production". "Terran 1 has served us exceptionally well in this capacity leading up to our maiden launch, and we believe that launch day will also yield further significant learning."