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NASA may change 'MRO orbit' to help Mars 2020 – US Times Now

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NASA may change ‘MRO orbit’ to help Mars 2020


NASA may change ‘MRO orbit’ to help Mars 2020

NASA is thinking about changing the orbit of probably the oldest Mars spacecraft, a move planned to help the Mars 2020 mission subsequent to landing however which could influence the two its science and support of different missions.

NASA dispatched the Mars Reconnaissance Orbiter (MRO) in 2005 with a suite of six science instruments, including a high-resolution camera. The spacecraft has progressively been utilized as a communications relay, supporting spacecraft on the outside of Mars.

In 2018, concerned about aging segments on the shuttle, NASA proposed a possible change to the space apparatus’ circle. MRO is as of now in a sun-synchronous circle that ignores surface at midafternoon. NASA proposed moving the space apparatus into a circle with an intersection time later in the day to diminish the measure of time in each circle the rocket is in the planet’s shadow. That would lessen the workload on the spacecraft’s batteries and extend their lives.

At that point, NASA said it would defer a choice until after the arrivals of the InSight mission in November 2018 and Mars 2020 in February 2021. With Mars 2020 now weeks from handling, that choice on whether to change MRO’s circle is coming due.

“Our intent is to make a decision following the landing and initial operations of Mars 2020,” Eric Ianson, head of NASA’s Mars Exploration Program, said at a Jan. 27 meeting of the Mars Exploration Program Analysis Group (MEPAG).

While the change in circle is proposed to extend MRO’s life, a few Mars researchers are concerned it could disturb science. The distinctive circle would make it more hard to contrast novel perceptions and prior ones. It could likewise influence MRO’s capacity to offer help to different missions, for example, the Curiosity rover.

“We want to make sure we fully understand the benefits of staying in the current orbit and adjusting the orbit,” Ianson said. “I think people notionally have an idea about that, but I don’t think we’ve fully examined it and had a really in-depth discussion about it.”

Michael Meyer, lead researcher for the Mars Exploration Program, said at the MEPAG meeting that a possible change in the rocket’s circle could have “a few other complications”, for example, uphold for both Curiosity and the European Space Agency’s ExoMars mission, presently planned for dispatch in 2022 after it missed its mid-2020 dispatch window.

“We’re going to revisit it” after the Mars 2020 landing, he said, “and do what the real trades are, and make a decision on what the best thing is to do for overall Mars science.”

The communications infrastructure at Mars is a developing worry for researchers and mission planners. NASA has depended on orbiters dispatched fundamentally for science missions to fill in as transfers, including MRO just as Mars Odyssey, dispatched in 2001, and MAVEN, dispatched in 2013.

Recommendations lately for new orbiter missions either committed to communications or with communications as one of their essential jobs have gained little ground. The latest idea, introduced at meetings in late 2020, required an network of three satellites with intersatellite connections to give ceaseless high-data transmission interchanges to shuttle both on a superficial level and in circle. Those shuttle could be created in some sort of business partnership.

That idea is most intently attached to Mars Ice Mapper, a mission still in early improvement that will fly a radar planning payload to search for subsurface ice stores to help future mechanical or human missions. That interchanges network, NASA authorities said, would expand the measure of information that mission could return by a factor of 100.

The two Mars Ice Mapper and the proposed correspondences network won’t dispatch until some other time in the decade, whenever endorsed. Ianson said a choice on changing MRO’s circle to help Mars 2020 will be made “in the coming months.”


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‘Big Sam’: Paleontologists unearth giant skull of Pachyrhinosaurus in Alberta

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It’s a dinosaur that roamed Alberta’s badlands more than 70 million years ago, sporting a big, bumpy, bony head the size of a baby elephant.

On Wednesday, paleontologists near Grande Prairie pulled its 272-kilogram skull from the ground.

They call it “Big Sam.”

The adult Pachyrhinosaurus is the second plant-eating dinosaur to be unearthed from a dense bonebed belonging to a herd that died together on the edge of a valley that now sits 450 kilometres northwest of Edmonton.

It didn’t die alone.

“We have hundreds of juvenile bones in the bonebed, so we know that there are many babies and some adults among all of the big adults,” Emily Bamforth, a paleontologist with the nearby Philip J. Currie Dinosaur Museum, said in an interview on the way to the dig site.

She described the horned Pachyrhinosaurus as “the smaller, older cousin of the triceratops.”

“This species of dinosaur is endemic to the Grand Prairie area, so it’s found here and nowhere else in the world. They are … kind of about the size of an Indian elephant and a rhino,” she added.

The head alone, she said, is about the size of a baby elephant.

The discovery was a long time coming.

The bonebed was first discovered by a high school teacher out for a walk about 50 years ago. It took the teacher a decade to get anyone from southern Alberta to come to take a look.

“At the time, sort of in the ’70s and ’80s, paleontology in northern Alberta was virtually unknown,” said Bamforth.

When paleontogists eventually got to the site, Bamforth said, they learned “it’s actually one of the densest dinosaur bonebeds in North America.”

“It contains about 100 to 300 bones per square metre,” she said.

Paleontologists have been at the site sporadically ever since, combing through bones belonging to turtles, dinosaurs and lizards. Sixteen years ago, they discovered a large skull of an approximately 30-year-old Pachyrhinosaurus, which is now at the museum.

About a year ago, they found the second adult: Big Sam.

Bamforth said both dinosaurs are believed to have been the elders in the herd.

“Their distinguishing feature is that, instead of having a horn on their nose like a triceratops, they had this big, bony bump called a boss. And they have big, bony bumps over their eyes as well,” she said.

“It makes them look a little strange. It’s the one dinosaur that if you find it, it’s the only possible thing it can be.”

The genders of the two adults are unknown.

Bamforth said the extraction was difficult because Big Sam was intertwined in a cluster of about 300 other bones.

The skull was found upside down, “as if the animal was lying on its back,” but was well preserved, she said.

She said the excavation process involved putting plaster on the skull and wooden planks around if for stability. From there, it was lifted out — very carefully — with a crane, and was to be shipped on a trolley to the museum for study.

“I have extracted skulls in the past. This is probably the biggest one I’ve ever done though,” said Bamforth.

“It’s pretty exciting.”

This report by The Canadian Press was first published Sept. 25, 2024.

The Canadian Press. All rights reserved.

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The ancient jar smashed by a 4-year-old is back on display at an Israeli museum after repair

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TEL AVIV, Israel (AP) — A rare Bronze-Era jar accidentally smashed by a 4-year-old visiting a museum was back on display Wednesday after restoration experts were able to carefully piece the artifact back together.

Last month, a family from northern Israel was visiting the museum when their youngest son tipped over the jar, which smashed into pieces.

Alex Geller, the boy’s father, said his son — the youngest of three — is exceptionally curious, and that the moment he heard the crash, “please let that not be my child” was the first thought that raced through his head.

The jar has been on display at the Hecht Museum in Haifa for 35 years. It was one of the only containers of its size and from that period still complete when it was discovered.

The Bronze Age jar is one of many artifacts exhibited out in the open, part of the Hecht Museum’s vision of letting visitors explore history without glass barriers, said Inbal Rivlin, the director of the museum, which is associated with Haifa University in northern Israel.

It was likely used to hold wine or oil, and dates back to between 2200 and 1500 B.C.

Rivlin and the museum decided to turn the moment, which captured international attention, into a teaching moment, inviting the Geller family back for a special visit and hands-on activity to illustrate the restoration process.

Rivlin added that the incident provided a welcome distraction from the ongoing war in Gaza. “Well, he’s just a kid. So I think that somehow it touches the heart of the people in Israel and around the world,“ said Rivlin.

Roee Shafir, a restoration expert at the museum, said the repairs would be fairly simple, as the pieces were from a single, complete jar. Archaeologists often face the more daunting task of sifting through piles of shards from multiple objects and trying to piece them together.

Experts used 3D technology, hi-resolution videos, and special glue to painstakingly reconstruct the large jar.

Less than two weeks after it broke, the jar went back on display at the museum. The gluing process left small hairline cracks, and a few pieces are missing, but the jar’s impressive size remains.

The only noticeable difference in the exhibit was a new sign reading “please don’t touch.”

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B.C. sets up a panel on bear deaths, will review conservation officer training

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VICTORIA – The British Columbia government is partnering with a bear welfare group to reduce the number of bears being euthanized in the province.

Nicholas Scapillati, executive director of Grizzly Bear Foundation, said Monday that it comes after months-long discussions with the province on how to protect bears, with the goal to give the animals a “better and second chance at life in the wild.”

Scapillati said what’s exciting about the project is that the government is open to working with outside experts and the public.

“So, they’ll be working through Indigenous knowledge and scientific understanding, bringing in the latest techniques and training expertise from leading experts,” he said in an interview.

B.C. government data show conservation officers destroyed 603 black bears and 23 grizzly bears in 2023, while 154 black bears were killed by officers in the first six months of this year.

Scapillati said the group will publish a report with recommendations by next spring, while an independent oversight committee will be set up to review all bear encounters with conservation officers to provide advice to the government.

Environment Minister George Heyman said in a statement that they are looking for new ways to ensure conservation officers “have the trust of the communities they serve,” and the panel will make recommendations to enhance officer training and improve policies.

Lesley Fox, with the wildlife protection group The Fur-Bearers, said they’ve been calling for such a committee for decades.

“This move demonstrates the government is listening,” said Fox. “I suspect, because of the impending election, their listening skills are potentially a little sharper than they normally are.”

Fox said the partnership came from “a place of long frustration” as provincial conservation officers kill more than 500 black bears every year on average, and the public is “no longer tolerating this kind of approach.”

“I think that the conservation officer service and the B.C. government are aware they need to change, and certainly the public has been asking for it,” said Fox.

Fox said there’s a lot of optimism about the new partnership, but, as with any government, there will likely be a lot of red tape to get through.

“I think speed is going to be important, whether or not the committee has the ability to make change and make change relatively quickly without having to study an issue to death, ” said Fox.

This report by The Canadian Press was first published Sept. 9, 2024.

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