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Blue Origin to launch 'astronaut rehearsal' New Shepard test flight today. How to watch live.

Update for 1:20 p.m. ET: Blue Origin has successfully (and landed) its New Shepard NS-15 mission. You can read our full story here.

Blue Origin plans to launch an uncrewed test flight of its New Shepard suborbital vehicle today (April 14), and you can watch the action live online.

The company, which is led by Amazon.com founder Jeff Bezos, will launch New Shepard from its West Texas site on Wednesday during a window that opens at 9 a.m. EDT (1300 GMT; 8 a.m. local time), if all goes according to plan. 

You can watch it on this page and here, as well as on the Space.com homepage, starting an hour before liftoff, courtesy of Blue Origin, or directly via the company. Blue Origin's webcast is currently scheduled to begin at 10:15 a.m. EDT (1415 GMT), which the company has said would mark one hour before liftoff.

Blue Origin is developing New Shepard, a reusable rocket-capsule combo, to take paying customers and payloads on brief trips to suborbital space. Wednesday's flight, known as NS-15, won't carry any people, but it will be a substantial step toward crewed operations.

Related: Blue Origin's NS-11 New Shepard test flight in photos

"During the mission, astronaut operational exercises will be conducted in preparation for human spaceflight," Blue Origin representatives wrote in a mission description.

"The primary operations will entail Blue Origin personnel standing in as astronauts entering into the capsule prior to launch," they added. "These astronauts will climb the launch tower, get into their seats, buckle their harnesses and conduct a communications check from their seat with CAPCOM, the Capsule Communicator."

The Blue Origin personnel will depart the New Shepard capsule before launch. After landing, they'll get back into the capsule to rehearse exit procedures, according to the description.

NS-15 will be the 15th New Shepard flight overall and the second for NS-4, the new and upgraded vehicle that's expected to be the first to carry astronauts. Like NS-4's initial flight, which occurred in January, Wednesday's test mission will carry aloft Blue Origin's instrument-laden dummy, Mannequin Skywalker, and thousands of postcards, the mission description states.

These postcards were sent in by students around the world via Blue Origin's nonprofit organization, Club for the Future, which organized such operations on several previous New Shepard flights as well.

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 Facebook. 

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Mike Wall
SPACE.COM SENIOR SPACE WRITER — Michael has been writing for Space.com since 2010. 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.