MAVEN: First look at upper atmosphere

PIA18613_ipNASA’s Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft has provided scientists their first look at a storm of energetic solar particles at Mars, produced unprecedented ultraviolet images of the tenuous oxygen, hydrogen, and carbon coronas surrounding the Red Planet, and yielded a comprehensive map of highly variable ozone in the atmosphere underlying the coronas….

“All the instruments are showing data quality that is better than anticipated at this early stage of the mission,” said Bruce Jakosky, MAVEN principal investigator at the University of Colorado, Boulder. “All instruments have now been turned on — although not yet fully checked out — and are functioning nominally. It’s turning out to be an easy and straightforward spacecraft to fly, at least so far. It really looks as if we’re headed for an exciting science mission.”  [More at link]

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THEMIS: Yardangs

Yardangs (THEMIS_IOTD_20141013)THEMIS Image of the Day, October 13, 2014. This region near Memnonia Sulci has been eroded by the wind to form linear ridges called yardangs. The two prominent directions of wind are recorded by the two directions of the ridges.

More THEMIS Images of the Day by geological topic.

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Mars fleet preps for Comet Siding Spring, Oct. 19

PIA18611_hiresNASA’s extensive fleet of science assets, particularly those orbiting and roving Mars, have front row seats to image and study a once-in-a-lifetime comet flyby on Sunday, Oct. 19. Comet C/2013 A1, also known as Comet Siding Spring, will pass within about 87,000 miles (139,500 kilometers) of the Red Planet — less than half the distance between Earth and our Moon and less than one-tenth the distance of any known comet flyby of Earth….

In preparation for the comet flyby, NASA maneuvered its Mars Odyssey orbiter, Mars Reconnaissance Orbiter, and the newest member of the Mars fleet, Mars Atmosphere and Volatile EvolutioN (MAVEN), in order to reduce the risk of impact with high-velocity dust particles coming off the comet…  [More at link]

More about the comet’s encounter with Mars here (NASA) and here (CometCampaign.org).

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Curiosity update: ‘APXS raster on Morrison’

0771MH0004350000300246R00_DXXXSol 774, October 9, 2014, update from USGS Scientist Ken Herkenhoff: “I’m scheduled to support MAHLI/MARDI uplink tomorrow, so today I’m getting familiar with recent results and near-term plans after spending a couple days focusing on other projects.  The “Confidence Hills” campaign continues to go well…  MAHLI received merges of the nighttime images of the sides of the drill hole on Sol 771 (one of which shows bluish ChemCam laser spots…” [More at link]

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Mars Orbiter Mission: New global image

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October 7, 2014: Another full disc image of Mars, taken by the Mars Color Camera, from an altitude of 66,543 km. Dark region towards south of the cloud formation is Elysium – the second largest volcanic province on Mars.

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THEMIS: Angustus Labrynthus

"Inca City" Angustus Labrynthus (THEMIS_IOTD_20141009)THEMIS Image of the Day, October 9, 2014. This region of linear, intersecting ridges near the south pole is called Angustus Labyrinthus.

More THEMIS Images of the Day by geological topic.

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MARCI weather report: Sept 29-Oct 5, 2014

Regional dust storm activityreleaseimg_140929_141005 occurred in Deuteronilus, Utopia, and Arcadia, with offshoots observed south into Elysium. The Acidalia storm-track was also active, with many storm events occurring from central Acidalia south into Chryse…. [More at link, including video]

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HiRISE: Ceti Mensa

tumblr_nd31sdUxfA1rlz4gso1_1280Ceti Mensa not Ceti Alpha V. Beautiful Mars series.

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THEMIS: Daedalia Planum

Lava flows of Daedalia Planum (THEMIS_IOTD_20141008)THEMIS Image of the Day, October 8, 2014. This VIS image shows a small portion of Daedalia Planum, a huge region of volcanic flows south of Arsia Mons.

More THEMIS Images of the Day by geological topic.

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HiRISE: Fans in non-cryptic terrain

tumblr_nd16f8lhhU1rlz4gso1_1280Fans in non-cryptic terrain: Sublimation at work! (Sublimation is the process of going from a solid directly to a gaseous form, so the darker material under the ground is exposed rapidly onto the lighter surface).

Beautiful Mars series.

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