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Technology NASA loses contact with Mars rover in huge dust storm

15:32  14 june  2018
15:32  14 june  2018 Source:   cbsnews.com

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NASA 's Opportunity Mars rover has dropped out of contact with Earth after a huge dust storm blocked the sun, preventing the solar-powered rover from recharging its batteries, mission managers said Wednesday.

THE RED PLANET — NASA lost contact with their Mars -based Opportunity robot this week after a massive dust storm set about its position on Mars . Subscribe to

An artist's concept of NASA's Opportunity Mars rover, now blanketed by a huge dust storm that has knocked it out of contact with Earth.: 061218-oppy.jpg© NASA 061218-oppy.jpg NASA's Opportunity Mars rover has dropped out of contact with Earth after a huge dust storm blocked the sun, preventing the solar-powered rover from recharging its batteries, mission managers said Wednesday. The rover, 14 years past its original 90-day design life, has powered down everything but its master clock.

Engineers are optimistic Opportunity will survive its trial by dust, but given its age and their emotional attachment to the hardy robot, they will not rest easy until skies clear enough for power levels to rise, allowing the rover to finally phone home.

"This team has a very strong bond with the rover, a very tight emotional connection with it," said John Callas, Opportunity project manager at NASA's Jet Propulsion Laboratory in Pasadena, Calif. "And we're concerned about it, obviously.

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NASA has lost communication with its Opportunity Mars rover , which is stuck in a dust storm encircling the entire planet. NASA scientists hope that once the

NASA ’s Opportunity rover braves huge dust storm on Mars as - allamericansthings.com. If everyone could just send a little love to @ MarsRovers Opportunity right now, I’m pretty sure love penetrates dust storms and is a good alternative to solar power.

"It's like you have a loved one in a coma in the hospital, the doctors are telling you you've just got to give it time and she'll wake up. ... But if it's your 97-year old grandmother, you're going to be very concerned. And so we are."

First detected May 30, the dust storm has been growing rapidly and is now expected to encircle the entire planet in the next two or three days.

When the storm was first detected, Opportunity's batteries were delivering 645 watthours of energy as it explored a channel-like depression in the rim of a large crater. Two days later, as the storm intensified and spread, energy levels had dropped to 345 watthours and the day after, to 133.

The steadily dropping power levels forced mission managers to suspend science operations on June 8. Two days later, a final transmission came in from Opportunity showing the energy level had dropped to just 22 watthours, which would be expected to trigger a low-power fault mode in which everything but the mission clock is turned off.

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' Storm Chasers' on Mars Searching for Dusty Secrets. Scientists with NASA 's Mars orbiters have been waiting years for an event like the current Mars global dust storm . Meanwhile, the rover continues to monitor the evolving storm .

NASA ’s Opportunity rover braves huge dust storm on Mars as - allamericansthings.com. If everyone could just send a little love to @ MarsRovers Opportunity right now, I’m pretty sure love penetrates dust storms and is a good alternative to solar power.

An attempt to contact Opportunity Tuesday was not successful.

a lit up building at night: The opacity of the martian atmosphere where the Opportunity rover is parked is illustrated in these simulated images, starting with a brilliant sun in an essentially clear sky at far left to a dark sky in which the sun is virtually blocked out at the far right.© Provided by CBS Interactive Inc. The opacity of the martian atmosphere where the Opportunity rover is parked is illustrated in these simulated images, starting with a brilliant sun in an essentially clear sky at far left to a dark sky in which the sun is virtually blocked out at the far right.

Callas said the dust storm had essentially turned day into night for Opportunity as the opacity of the atmosphere, a measure of how effectively the dust is blocking out sunlight, climbed to record levels. A major 2007 dust storm had an opacity level, or tau, above 5.5 while the current storm had an estimated tau of nearly 11 as of June 6

In low-power fault mode, Opportunity's master clock is programmed to wake up the flight computer periodically to check the battery charge but if it's not sufficient, the computer will put itself back to sleep and the clock will set another alarm to wake it back up for another check.

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A composite image from NASA showed a map of Mars ’s growing dust storm .CreditNASA/JPL-Caltech, via Associated Press. — Spirit and Oppy (@ MarsRovers ) June 13, 2018. Opportunity is at historically low energy levels. The rover weathered another serious storm in 2007, but the current

Fears for NASA ’s Opportunity rover are growing after engineers lost contact with Mars ’ oldest mechanical explorer during a raging dust storm . In 2007 a huge storm covered the planet, leading to two weeks of minimal operations, including several days with no contact from the rover in an effort

"Our expectation at this point is that the rover has gone to sleep, it's in this low-power mode and it will remain in that low power mode until there's sufficient energy to charge the batteries back above a certain threshold," Callas said.

"At that point, the rover will autonomously try to wake up and communicate with us. So at this point, we're in a waiting mode, we're listening every day for possible signals from the rover."

If power levels drop far enough, even the clock will stop ticking. In that case, the rover will simply remain asleep until the sky clears and the battery charge increases enough to trigger safety routines that will wake up the flight computer.

But without the clock, Opportunity would not know what time it is. In that case, the computer is programmed to periodically check to see if the sun is up and if so, to phone home. Flight controllers have no way of predicting when such a signal might come in, but they plan to listen around the clock.

In the meantime, the rover must endure freezing overnight temperatures, putting thermal stress on Opportunity's internal components. Callas said the rover is equipped with eight one-watt plutonium heat sources and simulations indicate it should be able to withstand the lowest expected temperatures without major damage.

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The growing dust storm on Mars . NASA /JPL-Caltech/MSSS. Because they weren’t able to contact Opportunity on Tuesday, they think that the rover may have shifted into what’s called ‘low power fault mode,’ where all its systems except for a clock shut down.

NASA recently tried to contact the rover again, and there was no answer. That doesn’t necessarily mean Opportunity is gone, but things aren’t looking good. The current state of the dust storm on Mars . NASA currently believes that Opportunity has shifted into a failsafe mode, which is triggered

a large mountain in the background: Mars rover Curiosity: Images from the Red Planet© Provided by CBS Interactive Inc. Mars rover Curiosity: Images from the Red Planet

"Because the rover's not active, it will be getting colder," Callas said. "The good news there is the dust storm has warmed temperatures on Mars. We're also going into the summer season, and so the rover will not get as cold as it would normally.

"We've done an estimate that shows the rover should stay above its minimum allowable operating temperatures for the long term, so we should be able to ride out the storm. When the skies clear and the rover begins to power up, it should begin to communicate with us."

Launched from Cape Canaveral on July 7, 2003, Opportunity landed on the red planet five-and-a-half months later, on Jan. 24, 2004, three weeks after a twin rover, Spirit, bounced to an airbag-cushioned landing on the other side of the planet.

Both landers were built to last at least three months in the harsh environment of Mars and while mission managers were hopeful they would exceed their design life, there were no guarantees.

But three months quickly came and went with no major problems. Then both rovers made it a full year, then two. And so it went, to everyone's ongoing amazement.

Spirit finally went silent on March 22, 2010, stuck in deep sand and unable to favorably orient itself so its solar arrays could face the low-altitude sun during the harsh martian winter.

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A growing dust storm on Mars has halted NASA ’s Opportunity rover as it waits for the string weather to pass. Buzz60. The thick dust means Opportunity's solar panels aren't getting enough sunlight to contact its owners back on Earth.

Washington: NASA engineers have not heard back from Opportunity rover that is caught in an unprecedented sandstorm on Mars , leading to speculation that it might be dead, the US space agency has said. The swirling Martian dust storm that raised the atmospheric opacity, or "tau"

But Opportunity, known to its many fans as "Oppy," remained in relatively good health and in February it marked its 5,000th Martian day, or sol, more than 14 years after landing.

a group of people standing next to a truck: 16 fascinating facts about NASA's Mars rovers© Provided by CBS Interactive Inc. 16 fascinating facts about NASA's Mars rovers

It's had its share of problems over the years -- its flash memory no longer works, two instruments have failed and problems with its two front wheels have forced it to drive backwards most of the time -- but the hardy robot has continued to collect valuable science, setting new records with every sol.

But the current dust storm is a definite challenge.

"Full dust storms like this one are not surprising, but are infrequent," NASA said in a status report. "They can crop up suddenly but last weeks, even months. During southern summer, sunlight warms dust particles, lifting them higher into the atmosphere and creating more wind. That wind kicks up yet more dust, creating a feedback loop that NASA scientists still seek to understand."

The nuclear-powered Curiosity Mars rover, operating in Gale Crater well away from Opportunity, is not expected to be impacted by the current storm.

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