Tuesday, February 12, 2019

NASA Making One Final Attempt at Phone Home Call with Opportunity Mars Rover


Opportunity rover looks south from the top of Perseverance Valley along the rim of Endeavour Crater on Mars in this partial self portrait including the rover deck and solar panels. Perseverance Valley descends from the right and terminates down near the crater floor. This navcam camera photo mosaic was assembled from raw images taken on Sol 4736 (20 May 2017) and colorized. Credit: NASA/JPL/Cornell/Marco Di Lorenzo/Ken Kremer/kenkremer.com
Ken Kremer  --SpaceUpClose.com & RocketSTEM –12 February 2019
CAPE CANAVERAL, FL – Tonight NASA engineers are making one final attempt at a ‘Phone Home Call’ with their world famous Opportunity Mars Rover that has not communicated a single bit since a massive global dust storm struck eight months ago, silencing the long lived solar powered robot - the agency announced late this afternoon, Tuesday, Feb. 12.

She has driven over 28 miles (45 km) on an amazing overland expedition of science and discovery since landing on Mars 15 years ago!

The last communication from the robot nicknamed ‘Oppy’ with Earth was received June 10, 2018 (Sol 5111) where she stands at Perseverance Valley – a gully carved by flowing liquid water in ancient times along the eroded rim of giant Endeavour Crater.

#OppyPhoneHome Update. Tonight, we’ll make our last planned attempts to contact Opportunity,” NASA tweeted late today, Feb. 12. 

“The solar-powered rover last communicated on June 10, 2018, as a planet-wide dust storm swept across Mars.”

‘Dead or Alive?’ That’s the prescient question. 

No Sun = No Power = No Phone Home

“Opportunity likely experienced a low-power fault, a mission clock fault and an up-loss timer fault,” according to the team explaining why not a chirp has been heard.

If this last communication attempt fails NASA officials will likely declare Opportunity dead at a media briefing to be held tomorrow afternoon, Wednesday, Feb. 13 led by NASA Administrator Jim Bridenstine. 

That’s because the weather situation is changing on Mars. Although the dust finally subsided last fall it is now once again increasing and becoming potentially dire as wintertime encroaches on southern hemisphere of the Red Planet where Opportunity is located. 

That means less sun and lower temperatures -both of which could kill off any chance for reviving Opportunity. 

You can watch the briefing live steamed on NASA Television, the agency's website and YouTube.

“NASA will discuss the status of its Mars Exploration Rover (MER) Opportunity in a media briefing at 11 a.m. PST (2 p.m. EST) Wednesday, Feb. 13, from the agency's Jet Propulsion Laboratory in Pasadena, California,” in a NASA statement. 
This pre-dust storm panoramic mosaic view was one of the last ones taken by NASA’s Opportunity rover and shows the spectacular view from her approximate current position as of June 2018 after traveling halfway down the fluid carved slope of Perseverance Valley - while peering into the interior of vast Endeavour Crater.  This navcam camera photo mosaic was assembled by Ken Kremer and Marco Di Lorenzo from raw images taken on Sol 5074  (3 May 2018) and colorized. Credit: NASA/JPL/Cornell/Ken Kremer/kenkremer.com/Marco Di Lorenzo

To illustrate Opportunity’s adventures, I’m including herein several of the hundreds of Opportunity rover mosaics created by the imaging team of Ken Kremer (founder and editor of Space UpClose) and Marco Di Lorenzo. Also check out our route map showing the entire 15 year journey across Mars. 

Until the historic planet encircling dust storm hit in late May 2018, the six wheeled robot had operated for 14 and one half years !!  - far beyond the wildest expectations of the science and engineering team.


The Opportunity mission was only warrantied to last a mere 90 sols, or 3 months since sending her first signal back to Earth from the surface on Jan. 24 at 9:05 p.m. PST (Jan. 25, 2004, at 12:05 a.m. EST).


Since then Opportunity has conducted a resoundingly successful scientific foray on the alien Red Planets surface on an stunning overland trek encompassing more than 28 miles (45 kilometers) across a region called Meridiani Planum.

Sadly Opportunity remains “still silent” as of today. 
NASA’s Opportunity rover discovers a beautiful Martian dust devil moving across the floor of Endeavour crater as wheel tracks show robots path exploring the steepest ever slopes of the then 13 year long mission, in search of water altered minerals at Knudsen Ridge inside Marathon Valley on 1 April 2016. This navcam camera photo mosaic was assembled from raw images taken on Sol 4332 (1 April 2016) and colorized. Credit: NASA/JPL/Cornell/ Ken Kremer/kenkremer.com/Marco Di Lorenzo
Since last June NASA pulled out all the stops to try and regain contact with Opportunity. 

In fact on the occasion of her 15th landing anniversary last month (Jan. 24) NASA announced that engineers were implementing a new strategy in hopes of making renewed contact.

“The team is continuing to listen for the rover over a broad range of times, frequencies and polarizations using the Deep Space Network (DSN) Radio Science Receiver,” said NASA.

As of today more then 835 recovery commands have been transmitted from the team via the DSN – but nothing has been heard back from Oppy.
This set of images from NASA’s Mars Reconnaissance Orbiter (MRO) shows a fierce dust storm kicking up on Mars in June 2018, with NASA’s Opportunity and Curiosity rovers on the surface indicated as icons.  Credits: NASA/JPL-Caltech/MSSS

When the massive planet-encircling dust storm hit Opportunity had been descending down and exploring Perseverance Valley located along the eroded western rim of the gigantic 22-km diameter (14 mi) impact crater named Endeavour. 

The global Martian dust storm that gradually encircled the Red Planet started in late May whipping up dust that blocked Opportunity’s solar arrays from generating power and charging the life-giving batteries - thereby cutting off all communications with Earth from the essentially dead robot.

Watch for an update and a gallery of our personal 'Postcards from Mars.’

Opportunity and twin sister Spirit found extensive evidence that liquid water once flowed on Mars billions of years ago when it was warmer and wetter and thus could potentially have supported Martian microbial life forms. Opportunity discovered clay minerals that formed in pH neutral water more conducive to life. 
Two 2001 images from the Mars Orbiter Camera on NASA's Mars Global Surveyor orbiter show a dramatic change in the planet's appearance when haze raised by dust-storm activity in the south became globally distributed. The images were taken about a month apart. Credit:  NASA/JPL-Caltech/MSSS




As of Feb 12, 2019 long lived Opportunity has survived or experienced over 5350 Sols (or Martian days) roving the harsh environment of the Red Planet. 

Opportunity has taken over 228,771 images and traversed over 28.06 miles (45.16 kilometers) - more than a marathon. 
NASA’s Opportunity rover peers outwards across to the vast expense of Endeavour Crater from current location descending along steep walled Marathon Valley in early November 2015. Marathon Valley holds significant deposits of water altered clay minerals holding clues to the planets watery past. Shadow of Pancam Mast assembly and robots deck visible at right. This navcam camera photo mosaic was assembled from images taken on Sol 4181 (Oct. 29, 2015) and colorized. Credit: NASA/JPL/Cornell/Ken Kremer/kenkremer.com/Marco Di Lorenzo
Watch for Ken’s continuing onsite coverage of NASA, SpaceX, ULA, Boeing, Lockheed Martin, Orbital ATK and more space and mission reports direct from the Kennedy Space Center, Cape Canaveral Air Force Station, Florida and Wallops Flight Facility, Virginia.

Stay tuned here for Ken's continuing Earth and Planetary science and human spaceflight news: www.kenkremer.com –www.spaceupclose.com – twitter @ken_kremer – email: ken at kenkremer.com

Dr. Kremer is a research scientist and journalist based in the KSC area, active in outreach and interviewed on TV and radio about space topics.
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Ken’s photos are for sale and he is available for lectures and outreach events

Ken’s upcoming talks:


Apr 3: “Exploring Mars; The Search for Life & A Journey in 3-D.”  7 PM, Lawton C Johnson Middle School, Summit, NJ. Open to the public. Details upcoming. Latest results from Mars & Ultima Thule
15 Year Traverse Map for NASA’s Opportunity rover from 2004 to 2019. This map shows the entire 45-kilometer (28 mi) path the rover has driven on the Red Planet during over 15 Earth years (7.8 Mars years) and more than a marathon runners distance for over 5300 Sols, or Martian days, since landing inside Eagle Crater on Jan 24, 2004 – to current location at Perseverance Valley at the western rim of Endeavour Crater. The rover reached Perseverance Valley in May 2017 and descended about halfway by June 2018.  Its likely a water carved Martian gully. Opportunity surpassed Marathon distance on Sol 3968 after reaching 11th Martian anniversary on Sol 3911. Opportunity discovered clay minerals at Esperance – indicative of a habitable zone – and searched for more at Marathon Valley. Credit: NASA/JPL/Cornell/ASU/Marco Di Lorenzo/Ken Kremer/kenkremer.com

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