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NASA Mars rover to Study an ancient fluid-carved valley incised on the inner slope of a vast crater’s rim

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Red Planet Mars, VOA
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Washington, May 16, 2017: Mars rover Opportunity has reached the main destination of its current two-year extended mission — an ancient fluid-carved valley incised on the inner slope of a vast crater’s rim, NASA has said.

As the rover approached the upper end of “Perseverance Valley” in early May, images from its cameras began showing parts of the area in greater resolution than what can be seen in images taken from the orbit above Mars.

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“The science team is really jazzed at starting to see this area up close and looking for clues to help us distinguish among multiple hypotheses about how the valley formed,” said Opportunity Project Scientist Matt Golombek of NASA’s Jet Propulsion Laboratory (JPL) in Pasadena.

The process that carved Perseverance Valley into the rim of Endeavour Crater billions of years ago has not yet been identified.

It might have been flowing water, or might have been a debris flow in which a small amount of water lubricated a turbulent mix of mud and boulders, or might have been an even drier process, such as wind erosion.

The mission’s main objective with Opportunity at this site is to assess which possibility is best supported by the evidence still in place, NASA said.

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The upper end of the valley is at a broad notch in the crest of the crater rim. The rover team’s plan for investigating the area begins with taking sets of images of the valley from two widely separated points at that dip in the rim.

This long-baseline stereo imaging will provide information for extraordinarily detailed three-dimensional analysis of the terrain.

The valley extends down from the rim’s crest line into the crater, at a slope of about 15 to 17 degrees for a distance of about two football fields.

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“The long-baseline stereo imaging will be used to generate a digital elevation map that will help the team carefully evaluate possible driving routes down the valley before starting the descent,” said Opportunity Project Manager John Callas of JPL.

Reversing course back uphill when partway down could be difficult, so finding a path with minimum obstacles will be important for driving Opportunity through the whole valley.

Researchers intend to use the rover to examine textures and compositions at the top, throughout the length and at the bottom, as part of investigating the valley’s history.

Opportunity and the next-generation Mars rover, Curiosity, as well as three active NASA Mars orbiters and surface missions to launch in 2018 and 2020 are all part of ambitious robotic exploration to understand Mars, which helps lead the way for sending humans to Mars in the 2030s. (IANS)

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US Senators Want NASA To Extend The ISS Life Until At Least 2028

The aim was to save mony so that more resources could invested into deep space exploration of the Moon and eventually Mars.

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NASA ISS
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NASA should extend the life of the International Space Station (ISS) until at least 2028, two US Senators said in a hearing to examine the future of the orbiting laboratory.

Senator Ted Cruz of Texas who is the Chairman of the Subcommittee on Space, Science, and Competitiveness convened the hearing on Wednesday, which was the first in a series of two hearings to examine the role of the space station.

In its 2019 budget request, the Donald Trump administration proposed ending direct government funding for the ISS by 2025, Florida Today, part of the USA Today network, reported on Wednesday.

“We’ve got this platform up there (worth) north of $100 billion, and it’s there,” Senator Bill Nelson of Florida, ranking member on the Subcommittee on Space, Science and Competitiveness, was quoted as saying.

“Abandoning this incredible orbiting laboratory where they are doing research, when we are on the cusp of a new era of space exploration, would be irresponsible at best and probably disastrous,” Nelson added.

NASA should extend the life of the International Space Station (ISS) until at least 2028, two US Senators said in a hearing to examine the future of the orbiting laboratory.
ISS is a permanent base for astronauts stationed in the outer sky. Wikimedia Commons

The NASA Transition Authorization Act of 2017 directed NASA to develop a plan to transition ISS from the current regime that relies heavily on NASA sponsorship to a regime where NASA could be one of many customers of a low-Earth orbit (LEO) non-governmental human space flight enterprise.

The aim was to save mony so that more resources could invested into deep space exploration of the Moon and eventually Mars.

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The space agency’s internal watchdog on Wednesday, however, said that private companies are unlikely to take on the more than $1 billion annual cost to run the International Space Station by 2025 as NASA hopes.

The report from NASA Inspector General provided a closing argument against the Trump administration’s proposal to privatise or abandon the orbiting laboratory so soon, the US senators said, according to the Florida Today report.

“The defence rests,” quipped Senator Cruz of Texas. (IANS)