Tag: yellowknife bay

The Latest From Mars: Water, Drilling, and Night Photos

curiosity_drilling2And we’re back from Mars with another slew of updates and breaking news! It seems that ever since the Curiosity Rover landed back in early August, the revelations and interesting facts have been pouring in non-stop. With each bit of news, we learn a little more about the Red Planet’s composition, its history, and how both are so similar to our own.

And in recent weeks, ever since Curiosity moved into Yellowknife Bay, there have been a number of interesting developments. One came back in January when the Rover found a series of calcium-rich deposits, similar to the kind observed here on Earth. These types of deposits are observed wherever and whenever water circulates through cracks and rock fractures. This is just the latest in a long string of discoveries which support the conclusion that Mars was once home to vast rivers.

curiosity_calciumThe images above show the similarity between the sulfate-rich veins seen by Curiosity rover to sulfate-rich veins seen on Earth. The view on the left is a mosaic of two shots from the remote micro-imager on Curiosity’s Chemistry and Camera (ChemCam) instrument which were taken on Dec. 14, 2012, or the 126th sol (Martian day) of operations. The image on the right is from the Egyptian desert here on Earth, which a pocket knife included for scale.

curiosity_night1The next bit of news came on January 25th when Curiosity’s high resolution robotic arm camera – also known as the Mars Hand Lens Imager (MAHLI) – snapped its first set of nighttime images. The images were illuminated by both an ultraviolet and white light emitting LED’s (shown above and below). The rock outcropping – named “Sayunei”, located at the site of the “John Klein” outcrop – was just one of many to be found in Yellowknife Bay where Curiosity has been conducting ongoing surveys.

curiosity_nightIn this case, it was breaking the rock apart in an effort to try and expose fresh material, free of obscuring dust. Once exposed, the pictures were meant to determine the internal makeup of the rock. “The purpose of acquiring observations under ultraviolet illumination was to look for fluorescent minerals,” said MAHLI Principal Investigator Ken Edgett of Malin Space Science Systems, San Diego. “If something looked green, yellow, orange or red under the ultraviolet illumination, that’d be a more clear-cut indicator of fluorescence.”

In addition, certain classes of organic compounds are also fluorescent. Yes, that search continues!

Curiosity_drillAnd last, but not least, came the news at the end of January that indicated that Curiosity’s long-awaited test of its high-powered drill will finally be taking place. This first drilling operation entailed hammering a test hole into a flat rock at the John Klien formation for the purposes of making sure everything works as needed. If things pan out, then the team would conduct many more tests and collect the drillings for analysis by the Rover’s CheMin and SAM analytical labs in the coming days.

In anticipation of the planned drilling operation, the rover carried out a series of four ‘pre-load’ tests on Monday (Jan. 27), whereby the rover placed the drill bit onto Martian surface targets at the John Klein outcrop and pressed down on the drill with the robotic arm. Engineers then checked the data to see whether the force applied matched predictions. The next step was an overnight pre-load test, to gain assurance that the large temperature change from day to night at the rover’s location would not add excessively to stress on the arm while it is pressing on the drill.

curiosity_drilling1The photo above shows the before and after shots of the rock where the drill conducted its hammering. And as you can see, the rock powered and is of a different color inside – slate gray as opposed to rust red. If the MSL lab deems the slab suitable, a number of test holes are likely to be drilled – using the rotation as well the percussive action – before a powdered sample is picked up and delivered to Curiosity’s onboard laboratories.

And so far, according to Curiosity project scientist John Grotzinger, things are looking good:

“The drilling is going very well so far and we’re making great progress with the early steps. The rock is behaving well and it looks pretty soft, so that’s encouraging,” he told BBC News.”

Ultimately, the purpose of the rover’s mission is to try to determine whether Gale has ever had the environments in the past that were capable of supporting bacterial life. Detailing the composition of rocks is critical to this investigation as the deposits in the crater will retain a geochemical record of the conditions under which they formed. Drilling a few centimetres inside a rock provides a fresh sample that is free from weathering or radiation damage, both of which are common to the Martian surface.

There is more to follow, for sure. And in the meantime, check out this video of the Mars Science Labs providing the latest Curiosity Rover Report explaining their finds for the month of January and plans for February.


Source: universetoday.com, (2), (3), BBC.co.uk, nasa.gov

Curiosity Prepares to Drill

curiosity_rocksMore news from Mars! Or more specifically, from Yellowknife Bay, a place that shows extensive evidence of flowing water. After relocating to the region and performing a preliminary search, Curiosity has located the rock it will drill in order to gain an understanding of its composition and search for organics molecules. The rock has been dubbed “John Klein”, and this will be the first time engineers have drilled into the surface of another planet.

Already, Curiosity has determined that at one time, the Gale Crater was once the site of flowing water. But in its current location, they are able to assess the geological history and have stumbled upon a number of interesting features. In the course of descending from the plateau region where it landed into the relative depression that is Yellowknife Bay, Curiosity has observed many layers of rock that are increasingly older, effectively taking it backwards into the planet’s history.

Curiosity-Yellowknife-Bay-Sol-125_2c_Ken-Kremer-580x151Geologists are finding a lot of different rock types, indicating that many different geologic processes took place here over time, all of which confirm that water passed through the region at one time. For example, some of the minerals are sedimentary, which suggests that flowing water moved small grains around and deposited them. Other samples are cracked and filled with veins of material such as calcium sulfate, which were formed when water percolated through the cracks and deposited the mineral.

terraformingAll these investigations suggest if you could go deep into Mars’ past and stand at the same spot as the rover, you’d probably see a river of flowing water with small underwater dunes along the riverbed. And since these rivers left traces behind, drilling into the rocks will reveal what else they carried, which could very well include the building blocks of life!

Already, Curiosity brushed some of these rocks to remove their dust covering and then examined them with its high-resolution Mars Hand Lens Imager (MAHLI) camera. The next step will be to drill 5 centimeter holes into some of these rocks and veins to definitively determine their composition. Geologist John Grotzinger of Caltech said that the team will search for aqueous minerals, isotope ratios that could indicate the composition of Mars’ atmosphere in the past, and possibly organic material.

curiosity_drillingThe drilling will probably take place within two weeks, though NASA engineers are still unsure of the exact date. But, says Richard Cook, Curiosity’s project manager, the procedure will be “the most significant engineering thing we’ve done since landing,” and will require several trial runs, equipment warm-ups, and drilling a couple test holes to make sure everything works. The team wants to take things as slowly as possible to correct for any problems that may arise, such as potential electrical shorts and excessive shaking of the rover.

And of course, this time around they are likely to be much more tight-lipped and reserved when it comes to announcing their findings. Should they uncover evidence of life at one time in Mars’ deep past, they will certainly need to be sure. Such a finding is likely to be… “Earthshaking”! I admit, that’s getting old. I’ll stop now…

Source: Wired.com

A Curiosity Christmas!

marsHey all! It’s a new year, a new day, but hopefully, there’s still some holiday cheer to go around! And in that spirit, I thought I’d share some news which came in over the holidays concerning Curiosity’s mission to Mars. For the rover, Christmas was celebrated at a location dubbed “Grandmas House”. Well, technically it spent it at Sol 130, a designated point in an area known as “Yellowknife Bay”. This area is a small depression located in the geographic region known as Glenelg, some 400 meters from “Bradbury Landing” where it first put down.

Curiosity-at-Yellowknife-Bay-Sol-130_3a_Ken-Kremer-580x208It is in Yellowknife Bay that Curiosity has been engaged in searching for its first target site to drill for a rock sample. The purpose of this to test out the rover’s high powered hammering drill, a test which has been put off because the Mars Science Team feared that the rock samples at other locations were not optimal. But the Glenelg area – which lies at the junction of three different types of geologic terrain – features a different type of geologic terrain compared to what Curiosity has driven on previously.

Curiosity-Yellowknife-Bay-Sol-125_2c_Ken-Kremer-580x151While there, Curiosity snapped a series of panoramic pictures of the area, which NASA compiled into the photos seen here and at the top. The rover also used its the APXS X-ray mineral spectrometer, ChemCam laser and MAHLI hand lens imager to gather initial science characterization data on the region and its rocky outcroppings. As you can plainly see, Yellowknife Bay was aptly named, being quite similar in appearance to its namesake here on Earth.

Hard to say what Curiosity will find once its begins drilling, but NASA is sure to be raving about it, either way. Everyone knows those Mars Science Laboratory people can’t keep anything a secret, even when they’re not sure they’ve got anything. Yes, MSL, that was a veiled reference to that “Earthshaking news” story you got us all excited about. And to answer you’re next question, no, I haven’t gotten over it yet. Can’t you tell?

Stay tuned for more news from the Red Planet! And while you’re at it, check out the video below where MSL team member Colette Lohr, the Tactical Uplink Lead, provides the latest video update on the Curiosity rover.

Source: Universetoday.com, (2)