Some of the outside of the boxes were & # 39; allows NASA to measure the density of Mount Sharp on Mars – and the results are not what they expected.
Mars has been known on a lonely trip over the surface for almost ten years now. It came ashore in 2012 and has been searching to & # 39; planet since then. But the journey teaches us much about our neighbor, and including the incredible preoccupation of his rocks.
Mount Sharp, Mount Porous
"The things we can do is to maximize the size of the content in Gale Crater," said Travis Gabriel, graduating student at Earth State School and Spanish Research at the State University of Arizona , which counted the density of the rocks There is a concern that & # 39; drive over.
I like this study. For beginners, there was no sense of sense & # 39; to be able to measure the extent of large body creams when it was designed – at least, not the way the crew did.
Initially, some context: Use can be used to estimate rock density, but this is based on a chemical survey of rocks that can carry it through (therefore it is limited to surface measurement done). Gale Crater (in which Mount Sharp, "Aeolis Mons" officially) means it's suited to & # 39; a large rock body with a 96-mile (154 km) measure, and its depth of course out of reach Curiosity.
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To evaluate the density, the essential rover will be inserted into rock, and # 39; Exit the rest, and analyze the & # 39; mining. Based on the specific species identified and their ratios, control of land can estimate how close a chicken is. And NASA was content with this for the longest time. But the current survey accurately doubts the previous estimates.
There are plenty of minerals "Working from the rocks" as determined by the Chemistry and Mineral instrument, we consider a concentration of grain of 2810 kilograms per cubic meter, "said Gabriel." But its size is not We came from our survey much smaller – 1680 kilograms per cubic meters. "
No the team instead of using accelerometers and curiosity gàroscopes to read density. These devices are very similar in any smartphone (just globally and more expensive), and are used to test and control instructions. NASA will use readings from these tools to guide directions over the Mars front, just like using those in the # 39; Your mobile phone to guide the nearest inn.
These machines work on a day-to-day basis, however – not just when you move. And those who feel are aware of enough to build on the interesting local route at the place where it can be found.
The team returned engineering data back to Curiosity since 2012, when it hit Mars. These readings were broken to measure the over-impact of over 700 points over the rover's route. The readings revealed that it began to climb Mount Sharp as a result. suffering from elevated trays. It was expected.
But the increase was much weaker than we would expect to see in such a case, reciting the authors.
"The lowest levels of Mount Sharp are incredibly poor," said the author Kevin Lewis from the University of Johns Hopkins.
"We know that the lowest levels of the hill were buried over time. They make them closer closer. But this product suggests that the burial is not tasted with a lot of material like we thought. "
The conclusions help us to understand how Mount Sharp has become. The mid-tops of Martian's cleansing are Increase the size of Gale, with the effect that the pit output (Gale & # 39; s is Mount Sharp). So we know why Sharp is so tall. The highest sequences are made out of sediments that are swept with the wind, and it is easier to break the rock. The theory was; Until now, these sediments have been pulled down on the mountain and the pit, being carried into a harder rock, before being swept away with its stomach; wind.
But the new findings suggest that lower Sharp sequences are made up of just half a mile miles (1 to 2km) of material – much less than the pit is completely filled.
"There are still many questions about how Mount Sharp has been developed, but this paper puts an important part to the puzzle," said Ashwin Vasavada, a Scientist project Curiosity at the NAS Propulsion Laboratory NASA in Pasadena, California, which is a management of the mission.
"I am delighted that creative scientists and engineers still find innovative ways to make new scientific discoveries with the rover."
This is definitely a fascinating mind – a man who aims to even even even more open up on Mount Sharp slopes. The study also conducted a powerful way NASA can use with Curiosity and rovers to explore a long world. In fact, it's very similar to that principle that is used in gravimetry, but I'm sure to see how creative & The team brought this survey.
The paper "Mars's surface landscape reflects the granite of the moon of the moon at Gale Crater" published in the magazine ScienceSouth Westerly
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