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Science

SpaceX says rocket performance OK in secret satellite launch

SpaceX is defending its rocket performance during the weekend launch of a secret U.S. satellite. Company President Gwynne Shotwell responded Tuesday to media reports that the satellite codenamed Zuma was lost Sunday night. Shotwell says the Falcon 9 rocket "did everything correctly" and suggestions otherwise are "categorically false." Northrop Grumman _ which provided the satellite for an undisclosed government entity _ isn't commenting.

This Sunday, Jan. 7, 2019 photo made available by SpaceX shows the launch of the Falcon 9 rocket at Cape Canaveral, Fla., for the "Zuma" U.S. satellite mission. Responding to media reports that the satellite was lost, SpaceX President Gwynne Shotwell says the rocket "did everything correctly" and suggestions otherwise are "categorically false." (SpaceX via AP), This Sunday, Jan. 7, 2019 photo made available by SpaceX shows the launch of the Falcon 9 rocket at Cape Canaveral, Fla., for the "Zuma" U.S. satellite mission. Responding to media reports that the satellite was lost, SpaceX President Gwynne Shotwell says the rocket "did everything correctly" and suggestions otherwise are "categorically false." (SpaceX via AP)
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1 week ago

CAPE CANAVERAL, Fla. (AP) — SpaceX defended its rocket performance during the weekend launch of a secret U.S. satellite, responding Tuesday to media reports that the satellite codenamed Zuma was lost.

Company President Gwynne Shotwell said the Falcon 9 rocket “did everything correctly” Sunday night and suggestions otherwise are “categorically false.”

Northrop Grumman — which provided the satellite for an undisclosed U.S. government entity — said it cannot comment on classified missions. The company chose SpaceX as the launch provider, noting late last year that it took “great care to ensure the most affordable and lowest risk scenario for Zuma.” The name refers to a Malibu beach in Southern California.

This was SpaceX’ s third classified mission for the U.S. government, a lucrative customer. It was so shrouded in secrecy that the sponsoring government agency was not even identified, as is usually the case.

The Falcon’s first stage completed its job, lifting the rocket off the pad and toward space, then separated and landed back at Cape Canaveral. But second-stage information was kept to a minimum because of all the secrecy surrounding the flight. The rocket’s second stage propels the satellite into orbit.

The Wall Street Journal quotes unidentified congressional officials who were briefed on the mission as saying the satellite apparently did not separate from the second stage, and plunged through the atmosphere and burned up.

Originally scheduled for a November launch, Zuma was delayed by potential concern about another mission’s payload fairing, the shell on top that protects a satellite during launch. The company later said it had cleared the issue.

Harvard astronomer Jonathan McDowell, who catalogues launches worldwide, said an object the size of a second stage re-entered Earth’s atmosphere over Sudan some two hours after the launch. That would have been about 1 ½ orbits and normal for a second stage. He said a number designation was assigned by federal space trackers, but that doesn’t mean there is anything still in orbit.

SpaceX’s Shotwell said in a statement that since no rocket changes are warranted for upcoming flights, the company’s launch schedule remains on track. If additional reviews uncover any problems, she said, “we will report it immediately.”

Last year was a banner year for the private space company with 18 launches. It’s shooting for even more flights in 2018.

SpaceX’s new, powerful rocket, the Falcon Heavy, was at its launch pad at NASA’s Kennedy Space Center on Tuesday, awaiting an engine test-firing sometime this week. The California-based company aims to launch the Heavy by month’s end, making its debut with chief executive Elon Musk’s own personal Tesla Roadster on board. Another Falcon 9, meanwhile, is scheduled to fly in three weeks with a communication satellite for Luxembourg.

___

Science Writer Seth Borenstein contributed to this report from Washington.

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