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Tech & Science Spectacular New Crater Discovered On Mars

04:51  18 june  2019
04:51  18 june  2019 Source:   gizmodo.com.au

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Discovering fresh impact craters on Mars is nothing new for the Mars Reconnaissance Orbiter. Other notable examples include a crater discovered inside the much larger Corinto Crater in 2018, and a 30 metre wide crater spotted in 2014. In other MRO news, the spacecraft recently spotted a strange

The new crater discovered by the Mars Reconnaissance Orbiter. Discovering fresh impact craters on Mars is nothing new for the Mars Reconnaissance Orbiter. Other notable examples include a crater discovered inside the much larger Corinto Crater in 2018, and a 30-meter-wide (100-foot) crater .

Spectacular New Crater Discovered On Mars© Image: NASA/JPL/University of Arizona The new crater discovered by the Mars Reconnaissance Orbiter. (Image: NASA/JPL/University of Arizona)

A fresh Martian crater has been detected in a stunning new image taken by NASA’s Mars Reconnaissance Orbiter.

Using its High-Resolution Imaging Science Experiment (HiRISE), the spacecraft photographed the new feature on April 17, 2019 from an altitude of 255 kilometres, according to a HiRise press release. The crater is located in the Valles Marineris region near the equator, and it formed at some point between September 2016 and February 2019. We can’t monitor the entire Martian surface at shorter intervals yet, hence the uncertainty as to when it formed.

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A new crater on Mars , which appeared sometime between September 2016 and February 2019, shows up as a dark smudge on the landscape in "It is a reminder of what's out there," Bray, a HiRISE targeting specialist who imaged this new crater , told Space.com. She said that Mars is a dynamic

The crater is at 3.7 degrees north latitude, 53.4 degrees east longitude on Mars . Before-and-after imaging that brackets appearance dates of fresh craters on Mars has indicated that impacts producing craters at least 12.8 feet (3.9 meters) in diameter occur at a rate exceeding 200 per year globally.

The HiRise release described the new photo as a "work of art," saying "the darker material exposed beneath the reddish dust" is what makes this particular crater stand out. The bluish areas in the false-colour image above show areas in which the red surface material was most disrupted by the impact.

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The crater is located in the Valles Marineris region near the equator, and it formed at some point between September 2016 and February 2019. HiRISE team member and University of Arizona staff scientist Veronica Bray told Space.com that the crater is about 15 to 16 metres (49 to 53 feet) wide.

The crater is at 3.7 degrees north latitude, 53.4 degrees east longitude on Mars . Before-and-after imaging that brackets appearance dates of fresh craters on Mars has indicated that impacts producing craters at least 12.8 feet (3.9 meters) in diameter occur at a rate exceeding 200 per year globally.

Spectacular New Crater Discovered On Mars© Image: NASA/JPL/University of Arizona Black-and-white photo of the new crater. (Image: NASA/JPL/University of Arizona)

HiRISE team member and University of Arizona staff scientist Veronica Bray told Space.com that the crater is about 15 to 16 metres wide. The dark splotch created by the impact is around 500 metres wide. Bray estimated the size of the meteorite at around 1.5 metres wide.

This chunk of space rock probably wouldn’t have survived the journey through Earth’s thicker atmosphere, she said, but the rock was likely quite solid, as there’s no evidence it broke up into smaller pieces during atmospheric entry. The impact may have exposed basaltic rock from beneath the Martian surface, but it’s not clear if the impact churned up subterranean ice, she told Space.com.

Discovering fresh impact craters on Mars is nothing new for the Mars Reconnaissance Orbiter. Other notable examples include a crater discovered inside the much larger Corinto Crater in 2018, and a 30 metre wide crater spotted in 2014.

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But it will carry a new set of instruments geared to searching for the carbon building blocks of life and other signs of past microbes. Jezero, a 28-mile-wide crater just north of Mars ’s Equator, was chosen from four finalist sites. Analysis of images, taken from satellites orbiting Mars , suggests that the crater

Researchers say discovery of stains from summertime flows down cliffs and crater walls increases chance of finding life on red planet.

In other MRO news, the spacecraft recently spotted a strange Martian surface feature that bore an uncanny resemblance to the Starfleet logo from Star Trek.

Spectacular New Crater Discovered On Mars© Image: NASA/JPL/University of Arizona Image: NASA/JPL/University of Arizona

As noted in the HiRISE press release, this odd, chevron-like shape is the combined result of dunes, lava, and wind:

Long ago, there were large crescent-shaped (barchan) dunes that moved across this area, and at some point, there was an eruption. The lava flowed out over the plain and around the dunes, but not over them. The lava solidified, but these dunes still stuck up like islands. However, they were still just dunes, and the wind continued to blow. Eventually, the sand piles that were the dunes migrated away, leaving these 'footprints' in the lava plain. These are also called “dune casts” and record the presence of dunes that were surrounded by lava.

The Mars Reconnaissance Orbiter remains an unsung hero of science. This spacecraft entered into Mars’ orbit in 2006, and its mission was only supposed to last two years. Thirteen years later, the MRO is still blowing us away. Fingers are crossed it will continue to serve as our eyes on the Red Planet for a long time to come.

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