The
flight was called off for the night about 25 minutes before the
start of a targeted launch window set to open at 8:14 p.m. EST
(0114 GMT Tuesday) as the rocket stood poised for liftoff from
NASA's Kennedy Space Center in Cape Canaveral, Florida.
In a message posted on the social media platform X, Elon Musk's
California-based rocket venture said the countdown was halted
"due to a ground side issue," adding that the "vehicle and
payload remain healthy." SpaceX did not elaborate.
The company did not immediately say when it would try again. The
mission's next launch opportunity is Tuesday night, SpaceX said.
The original plan to send the spacecraft to orbit late on Sunday
was scrubbed due to poor weather conditions at the Cape.
The delays came on what was to have been the seventh mission
flown by the X-37B, and its first launch atop a Falcon Heavy,
composed of three reusable rocket cores strapped together and
capable of lofting the vehicle far higher in orbit than ever
before.
Roughly the size of a small bus and resembling a miniature space
shuttle craft, the X-37B is built to deploy various payloads and
conduct technology experiments in long-duration orbital flights.
The X-37B has flown six previous missions since 2010, its last
flight lasting well over two years before the vehicle's return
landing in November 2022.
The U.S. Defense Department discloses few details about its
operation, which is carried out as part of the military's
National Security Space Launch program.
(Reporting by Joe Skipper in Cape Canaveral, Florida, and Steve
Gorman in Los Angeles; Additional reporting by Joey Roulette in
Washington; Writing by Steve Gorman; Editing by Nick Zieminski,
Stephen Coates and Leslie Adler)
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