FILE - This illustration made available by NASA shows the rover Opportunity on the surface of Mars. The exploratory vehicle landed on Jan. 24, 2004, and logged more than 28 miles (45 kilometers) before falling silent during a global dust storm in June 2018. There was so much dust in the Martian atmosphere that sunlight could not reach Opportunity's solar panels for power generation. (NASA via AP)

NASA rover finally bites the dust on Mars after 15 years

February 13, 2019 - 3:33 pm

CAPE CANAVERAL, Fla. (AP) — NASA's Opportunity, the Mars rover that was built to operate for just three months but kept going and going, rolling across the rocky red soil, was pronounced dead Wednesday, 15 years after it landed on the planet.

The six-wheeled vehicle that helped gather critical evidence that ancient Mars might have been hospitable to life was remarkably spry up until eight months ago, when it was finally doomed by a ferocious dust storm.

Flight controllers tried numerous times to make contact, and sent one final series of recovery commands Tuesday night, along with one last wake-up song, Billie Holiday's "I'll Be Seeing You," in a somber exercise that brought tears to team members' eyes. There was no response from space, only silence.

Thomas Zurbuchen, head of NASA's science missions, broke the news to the Opportunity team at what amounted to a wake at the space agency's Jet Propulsion Laboratory in Pasadena, California, announcing the demise of "our beloved Opportunity."

Given the silence from space, "it is therefore that I'm standing here with a sense of deep appreciation and gratitude that I declare the Opportunity mission as complete," Zurbruchen told a packed auditorium. "It's an emotional time."

The golf cart-size Opportunity outlived its twin, the Spirit rover, by several years. The two slow-moving vehicles landed on opposite sides of the planet in 2004 for a mission meant to last 90 Mars days, which are 39 minutes longer than a day on Earth.

In the end, Opportunity set endurance and distance records that could stand for years, if not decades.

Trundling along until communication ceased last June, Opportunity roamed a record 28 miles (45 kilometers) around Mars and worked longer than any other lander — anywhere, ever.

Opportunity was a robotic geologist, equipped with cameras and instruments at the end of a robotic arm for grinding away layers, taking microscopic images and analyzing the composition of the rocks and soil.

Its greatest achievement was discovering, along with Spirit , evidence that ancient Mars had water flowing on its surface and might have been capable of sustaining microbial life.

Opportunity was exploring Mars' Perseverance Valley, fittingly, when the fiercest dust storm in decades hit and contact was lost. The storm was so intense that it darkened the sky for months, preventing sunlight from reaching the rover's solar panels.

When the sky finally cleared, Opportunity remained silent, its internal clock possibly so scrambled that it no longer knew when to sleep or wake up to receive commands. Flight controllers sent more than 1,000 recovery commands, all in vain.

With project costs reaching about $500,000 a month, NASA decided there was no point in continuing.

"This is a hard day," said project manager John Callas. "Even though it's a machine and we're saying goodbye, it's still very hard and very poignant, but we had to do that. We came to that point."

Callas said the last-ditch attempt the night before to make contact was a sad moment, with tears and a smattering of applause when the operations team signed off. He said the team members didn't even bother waiting around to even see if word came back from space — they knew it was hopeless.

Scientists consider this the end of an era, now that Opportunity and Spirit are both gone.

Opportunity was the fifth of eight spacecraft to successfully land on Mars so far, all belonging to NASA. Only two are still working: the nuclear-powered Curiosity rover, prowling around since 2012, and the recently arrived InSight, which just this week placed a heat-sensing, self-hammering probe on the dusty red surface to burrow into the planet like a mole.

Three more landers — from the U.S., China and Europe — are due to launch next year.

NASA Administrator Jim Bridenstine said the overriding goal is to search for evidence of past or even present microbial life at Mars and find suitable locations to send astronauts, perhaps in the 2030s.

"While it is sad that we move from one mission to the next, it's really all part of one big objective," he said.

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The Associated Press Health & Science Department receives support from the Howard Hughes Medical Institute's Department of Science Education. The AP is solely responsible for all content.

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