1st orbital test flight of SpaceX's Starship Mars rocket pushed to March at the earliest

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We'll have to wait a bit longer for the orbital debut of SpaceX's Starship Mars rocket.

SpaceX had been aiming to launch Starship on its first orbital test flight in January or February, provided that the U.S. Federal Aviation Administration (FAA) wrapped up a programmatic environmental assessment (PEA) of the company's South Texas launch site by Dec. 31 as planned.

But that timeline no longer applies. The FAA announced on Tuesday (Dec. 28) that it has pushed the release of the final PEA back to Feb. 28, citing "the high volume of comments submitted on the draft PEA" and "discussions and consultation efforts with consulting parties."

Photos: SpaceX lifts huge Super Heavy rocket onto launch stand

Members of the public submitted more than 18,000 comments about the draft PEA, which was released on Sept. 17, FAA officials wrote in an update Tuesday.

SpaceX is developing Starship to get people and cargo to the moon, Mars and other deep-space destinations. NASA has already signed up for a ride, choosing Starship as the first crewed moon lander for the agency's Artemis lunar exploration program.

The huge vehicle consists of two fully reusable elements: a first-stage booster called Super Heavy and a 165-foot-tall (50 meters) spacecraft known as Starship. Both will be powered by SpaceX's next-generation Raptor engine — six for Starship and about 30 for Super Heavy.

Related stories:

— Starship and Super Heavy: SpaceX's Mars-colonizing transportation system
— Elon Musk says SpaceX could launch a Starship to the moon 'probably sooner' than 2024: report
— SpaceX launches Starship SN15 rocket and sticks the landing in high-altitude test flight

Starship prototypes have flown before, on roughly 6.2-mile-high (10 kilometers) hops into the skies above Starbase, SpaceX's facility near the South Texas village of Boca Chica. But the upcoming orbital test flight will be a much more ambitious endeavor, launching a Starship atop a Super Heavy for the first time ever.

If all goes according to plan, the Super Heavy will splash down in the Gulf of Mexico shortly after liftoff, while the Starship vehicle will complete one loop around Earth and splash down in the Pacific Ocean, off the Hawaiian island of Kauai.

We could see that launch as soon as early March, because SpaceX plans to be ready when it gets the green light. "FAA approval is the schedule driver," SpaceX founder and CEO Elon Musk said via Twitter Wednesday (Dec. 29) in response to a question about the test flight's target date.

Mike Wall is the author of "Out There" (Grand Central Publishing, 2018; illustrated by Karl Tate), a book about the search for alien life. Follow him on Twitter @michaeldwall. Follow us on Twitter @Spacedotcom or on Facebook.

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Mike WallSenior Space Writer

Michael Wall is a Senior Space Writer withSpace.comand joined the team in 2010.He primarily covers exoplanets, spaceflight and military space, but has been known to dabble in the space art beat.His book about the search for alien life, "Out There," was published on Nov. 13, 2018. Before becoming a science writer, Michael worked as a herpetologist and wildlife biologist. He has a Ph.D. in evolutionary biology from the University of Sydney, Australia, a bachelor's degree from the University of Arizona, and a graduate certificate in science writing from the University of California, Santa Cruz. To find out what his latest project is, you can follow Michael on Twitter.

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