Opportunity: Over 6 months without word

NASA Mars Exploration Rover Status Report, December 21, 2018: Mars atmospheric opacity (tau) over the rover site remains at a storm-free range around 1.0.

No signal from Opportunity has been heard since Sol 5111 (June 10, 2018). Opportunity likely experienced a low-power fault, a mission clock fault and an up-loss timer fault. Since the loss of signal, the team has been listening for the rover over a broad range of times, frequencies and polarizations using the Deep Space Network (DSN) Radio Science Receiver.

They have been commanding “sweep and beeps” throughout each daily DSN pass with both right-hand and left-hand circular polarization to address a possible complexity with certain conditions within mission clock fault on the rover. The team has expanded the breath of sweep and beep commanding covering more times of day on Mars.

Mars is now in the seasonal period of past dust clearing events for the rover. Since loss of signal, 456 recovery commands have been radiated to the rover. [More at link]

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THEMIS: Her Desher Vallis in Noachis Terra

Her Desher Vallis (THEMIS_IOTD_20181221)THEMIS Image of the Day, December 21, 2018. This VIS image shows a section of Her Desher Vallis. This channel is located in Noachis Terra.

See more THEMIS Images of the Day by geological subject.

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Mars Express: Korolev Crater

Perspective_view_of_Korolev_crater_node_full_image_2This image shows what appears to be a large patch of fresh, untrodden snow – a dream for any lover of the holiday season. However, it’s a little too distant for a last-minute winter getaway: this feature, known as Korolev crater, is found on Mars, and is shown here in beautiful detail as seen by Mars Express.

ESA’s Mars Express mission launched on 2 June 2003, and reached Mars six months later. The satellite fired its main engine and entered orbit around the Red Planet on 25 December, making this month the 15-year anniversary of the spacecraft’s orbit insertion and the beginning of its science programme.

These images are an excellent celebration of such a milestone. Taken by the Mars Express High Resolution Stereo Camera (HRSC), this view of Korolev crater comprises five different ‘strips’ that have been combined to form a single image, with each strip gathered over a different orbit. The crater is also shown in perspective, context, and topographic views, all of which offer a more complete view of the terrain in and around the crater….. [More at link]

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Curiosity update: Planning for the holidays

2263ML0121040030804964E01_DXXX-br2Sol 2265-75, December 19, 2018, update by MSL scientist Lucy Thompson: Planning today revolved around making sure that Curiosity has enough power after the Christmas holidays to be able to continue analyzing “Rock Hall,” the red Jura sample that we successfully drilled last weekend. We planned and uplinked 1 sol (sol = martian day) of science and diagnostic activities and 10 sols of REMS to take us through to the end of December. Tomorrow, our final day of planning before the MSL team takes a break for the holidays, we will plan Sols 2276 – 2278 to execute on Mars before the team here on Earth returns to nominal planning activities.

The priority was to facilitate diagnostic testing of the B-side computer to help assess the rover anomaly we experienced a few months ago (see this description of the anomaly). The diagnostics require Curiosity to be awake for long periods of time, which drains her battery, and does not leave much power for other activities. Because of this, although we had tentatively planned some ChemCam LIBS and RMI observations of rock targets in the workspace, as well as some Mastcam and Navcam… [More at link]

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HiRISE: Flows northwest of Elysium Mons

tumblr_pjy2q53UNn1rlz4gso2_1280Flows northwest of Elysium Mons. Elysium Mons is flanked by the smaller volcanoes Hecates Tholus to the northeast, and Albor Tholus to the southeast.

Beautiful Mars series. [More at links]

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ESA: Self-driving rovers tested in Mars-like Morocco

SherpaTT_rover_during_Morocco_field_test_node_full_image_2Robots invaded the Sahara Desert for Europe’s largest rover field test, taking place in a Mars-like part of Morocco. For two weeks three rovers and more than 40 engineers tested automated navigation systems at up to five different sites.

This marked the end of the first phase of the strategic research cluster on space robotics technologies, a scheme funded by the European Union’s Horizon 2020 programme.

The cluster is coordinated by the PERASPERA Ad Astra (Latin for ‘to the stars through hardships’) project, which is a partnership of Italy’s ASI space agency, France’s CNES space agency, the DLR German Aerospace Center, Spain’s CDTI technology agency and the UK Space Agency, UKSA, coordinated by ESA.

The venue for the field test – organised by Germany’s DFKI Robotics Innovation Centre – was a site served by the Ibn Battuta Centre, near Erfoud on the northern edge of the Sahara Desert. The wind-blown desert environment was selected by the EU’s Europlanet Research Infrastructure as a good match for Mars, and many others agree: the teams ended up sharing the location with a Hollywood feature film crew and Chinese documentary makers.

“What this kind of field test gives you is the proof of the pudding that your design is working well, even in some of the most challenging environments we can imagine,” explains Gianfranco Visentin, head of ESA’s Automation and Robotics section… [More at link]

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InSight: Seismometer deployed on the ground

PIA22956NASA’s InSight lander has deployed its first instrument onto the surface of Mars, completing a major mission milestone. New images from the lander show the seismometer on the ground, its copper-colored covering faintly illuminated in the Martian dusk. It looks as if all is calm and all is bright for InSight, heading into the end of the year.

“InSight’s timetable of activities on Mars has gone better than we hoped,” said InSight Project Manager Tom Hoffman, who is based at NASA’s Jet Propulsion Laboratory in Pasadena, California. “Getting the seismometer safely on the ground is an awesome Christmas present.”

The InSight team has been working carefully toward deploying its two dedicated science instruments onto Martian soil since landing on Mars on Nov. 26. Meanwhile, the Rotation and Interior Structure Experiment (RISE), which does not have its own separate instrument, has already begun using InSight’s radio connection with Earth to collect preliminary data on the planet’s core. Not enough time has elapsed for scientists to deduce what they want to know – scientists estimate they might have some results starting in about a year… [More at link]

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THEMIS: On the edge of the south polar ice cap

On the edge (THEMIS_IOTD_20181220)THEMIS Image of the Day, December 20, 2018. At the bottom of this image is the layered edge of the south polar cap.

There are more layers visible between the bright polar material and the dark sand dunes at the top of the image. These mid-toned layers most likely still contain polar ice but probably underneath a thick dust cover.

See more THEMIS Images of the Day by geological subject.

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Curiosity: Mastcam looks at Rock Hall

2263-mastcam100RHSol 2263, December 18, 2018. The Mastcam shot two frames on the Rock Hall drill site using its 100mm lens. Note the pinkish color of the tailings compared to the weathered surface of the outcrop. Click the image (3 MB) to enlarge it.

Sol 2263 raw images (from all cameras).

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HiRISE: Curving features at the source of Athabasca Valles

tumblr_pjqqjgGNZB1rlz4gso2_1280Curving features at the source of Athabasca Valles. These curving features are likely due to lava surges near the vent of Athabasca.

Beautiful Mars series. [More at links]

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