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China’s Mars Mission Is Up Next to Orbit the Red Planet – The New York Times

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The Tianwen-1 mission is scheduled to be the second of three new visitors to Mars this month.

China has landed on the moon three times, and even managed to bring one of its robotic lunar explorers back to Earth. Can it now pull off the challenge of landing on Mars?

The country’s space agency will complete a key step toward that goal on Wednesday when Tianwen-1, the spacecraft the country launched last July, attempts to orbit the red planet.

If the arrival at Mars succeeds, China will try to place a lander and a robotic rover on the planet later this year. It would join what could by then be a trio of NASA spacecraft studying the Martian surface.

China has said that the spacecraft will arrive at Mars on Wednesday. But the China National Space Administration and state media have not provided more specific information.

China’s space agency has a penchant for secrecy around its missions. It has shown more openness in the past year, providing a live video on state media of its Chang’e-4 mission’s launch to the moon. Should it announce a more precise arrival time, we will provide it here.

The Tianwen-1 Spacecraft

China’s mission to Mars features a probe that will land on the planet with help from a parachute.




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Lander

A parachute attached to a protective SHELL will slow the lander’s descent. Next, a set of STRUTS will deploy midair. Once on the surface, a RAMP will slide out so the rover can drive off.

Orbiter

After the orbiter reaches Mars, the landing probe will detach and descend to the planet’s surface.

Rover

Four solar panel wings will unfurl after landing.

Orbiter

After the orbiter reaches Mars, the landing probe will detach and descend to the planet’s surface.

Lander

A parachute attached to a protective SHELL will slow the descent. Next, a set of STRUTS will deploy midair. After landing, a RAMP will slide out so the rover can drive off.

Rover

With four solar panels

Orbiter

After the orbiter reaches Mars, the landing probe will detach and descend to the planet’s surface.

Rover

Four solar panel wings will unfurl after landing.

Lander

A parachute attached to the SHELL will slow the descent. Next, four STRUTS will deploy midair. After landing, a RAMP will slide out so the rover can drive off.


By Eleanor Lutz | Source: China National Space Administration and China Central Television

Tianwen-1 launched from China last July, taking advantage of a period when Mars and Earth were closest to each other during their journeys around the sun. This allows a relatively short transit between the two worlds.

To catch up with Mars, the spacecraft has fired its engines on several occasions, correcting its course so it can approach the red planet at the correct angle. The most recent engine firing occurred on Feb. 5, and the probe sent back pictures of the red planet from a distance of about 1.3 million miles.

On Wednesday, the engine will light up again, expending much of the spacecraft’s remaining fuel in a braking maneuver. That should slow it considerably, and allow the probe to be captured by Martian gravity. There it will circle at a safe distance, joining the other cast of robotic explorers in Martian orbit and preparing for that later surface landing attempt.

The Tianwen-1 probe en route to Mars in an image released in December.
CNSA, via Associated Press

The history of spaceflight is littered with failed voyages to Mars, including a Chinese mission in 2011 that never got out of Earth’s orbit after the Russian rocket it was traveling on failed. And a few spacecraft have stumbled during this final step of preparing to enter Martian orbit.

For instance, in 1999, NASA’s Mars Climate Orbiter suffered a navigation error — English units were not converted to metric — and the spacecraft burned in the Martian atmosphere. In 1992, NASA lost contact with its Mars Observer spacecraft days before it was to arrive at Mars, perhaps because of a fuel line rupture. After a Soviet mission in 1974, Mars 4, failed to fire its retro rockets, the spacecraft sailed away from Mars.

Still, the challenge of orbiting Mars is nothing compared with landing there.

The orbiter carries a lander and a rover which will make the difficult transit to the surface. China says it will attempt to land on Mars in May, but it has not specified a date.

Its destination is Utopia Planitia, a large basin in the northern hemisphere that most likely was once impacted by a meteor, and which was visited by NASA’s Viking 2 lander in 1976. One goal of the Tianwen-1 mission is to better understand the distribution of ice in this region, which future human colonists on Mars could use to sustain themselves.

Landing on the red planet is perilous. Spacecraft descend at a high speed and the thin atmosphere does little to help slow the trip to the ground. Air friction still generates extreme heat that must be absorbed or dissipated. A number of Soviet, NASA and European missions have crashed. Only NASA has landed intact more than once.

The Chinese spacecraft will spend months orbiting Mars to check systems and pick a landing spot that will not be too treacherous.

Should it land in one piece, the rover will need a name. After nominations from people in China, a panel of experts selected 10 semifinalists. Among them, according to state media, are Hongyi, from a Chinese word for ambition and persistence; Qilin, a hoofed creature of Chinese legend; and Nezha, a young deity who is considered a patron of rebellious youth.

Since China launched its mission to Mars in July, it has been to the moon and back.

The Chang’e-5 mission lifted off in November, collected lunar samples and then brought them back to Earth for scientists to study. It was the first new cache of moon rocks since the Soviet Union’s last lunar mission in 1976.

China’s Chang’e-4 mission, the first to land on the moon’s far side, is still in operation and its Yutu-2 rover is still studying the lunar surface more than two years after it launched.

China Daily/Reuters

The first robotic probe to arrive at Mars this year was Hope, an orbiter from the United Arab Emirates’ emerging space agency. It arrived on Tuesday, and will embark on a study of the red planet’s atmosphere, helping planetary scientists understand the weather dynamics of Mars.

The third new visitor to Mars will be Perseverance, NASA’s newest rover. It launched a bit later than the other two spacecraft last July, and will skip Martian orbit, heading directly to the planet’s surface on Feb. 18.

The robotic explorer would be NASA’s fifth rover on Mars, and it is very similar to Curiosity, which is now exploring the Gale crater. The new rover carries a different set of scientific instruments and will explore the Jezero crater, a dried-out lake that scientists believe could be a good target to seek fossilized evidence of extinct Martian microbial life.

The mission will also attempt a new first on the red planet: flying a helicopter in the wispy Martian atmosphere. NASA’s Ingenuity helicopter will be dropped off by the rover not long after landing. Then it will attempt a number of test flights in air as thin as the upper reaches of Earth’s atmosphere, aiming to demonstrate that Mars can be explored through the air as well as on the ground.

It’s getting a bit crowded around the red planet.

Six orbiters are currently studying the planet from space. Three were sent there by NASA: Mars Odyssey, launched in 2001, Mars Reconnaissance Orbiter, launched in 2005, and MAVEN, which left Earth in 2013.

Europe has two spacecraft in orbit. Its Mars Express orbiter was launched in 2003, and the ExoMars Trace Gas Orbiter lifted off in 2016 and is shared with Russia’s space program.

India operates the sixth spacecraft, the Mars Orbiter Mission, also known as Mangalyaan, which launched in 2013.

Two American missions are currently operating on the ground. Curiosity has been roving since 2012. It is joined by InSight, which has been studying marsquakes and other inner properties of the red planet since 2018. A third American mission, the Opportunity rover, expired in 2019 when a dust storm caused it to lose power.

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Here’s how Helene and other storms dumped a whopping 40 trillion gallons of rain on the South

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More than 40 trillion gallons of rain drenched the Southeast United States in the last week from Hurricane Helene and a run-of-the-mill rainstorm that sloshed in ahead of it — an unheard of amount of water that has stunned experts.

That’s enough to fill the Dallas Cowboys’ stadium 51,000 times, or Lake Tahoe just once. If it was concentrated just on the state of North Carolina that much water would be 3.5 feet deep (more than 1 meter). It’s enough to fill more than 60 million Olympic-size swimming pools.

“That’s an astronomical amount of precipitation,” said Ed Clark, head of the National Oceanic and Atmospheric Administration’s National Water Center in Tuscaloosa, Alabama. “I have not seen something in my 25 years of working at the weather service that is this geographically large of an extent and the sheer volume of water that fell from the sky.”

The flood damage from the rain is apocalyptic, meteorologists said. More than 100 people are dead, according to officials.

Private meteorologist Ryan Maue, a former NOAA chief scientist, calculated the amount of rain, using precipitation measurements made in 2.5-mile-by-2.5 mile grids as measured by satellites and ground observations. He came up with 40 trillion gallons through Sunday for the eastern United States, with 20 trillion gallons of that hitting just Georgia, Tennessee, the Carolinas and Florida from Hurricane Helene.

Clark did the calculations independently and said the 40 trillion gallon figure (151 trillion liters) is about right and, if anything, conservative. Maue said maybe 1 to 2 trillion more gallons of rain had fallen, much if it in Virginia, since his calculations.

Clark, who spends much of his work on issues of shrinking western water supplies, said to put the amount of rain in perspective, it’s more than twice the combined amount of water stored by two key Colorado River basin reservoirs: Lake Powell and Lake Mead.

Several meteorologists said this was a combination of two, maybe three storm systems. Before Helene struck, rain had fallen heavily for days because a low pressure system had “cut off” from the jet stream — which moves weather systems along west to east — and stalled over the Southeast. That funneled plenty of warm water from the Gulf of Mexico. And a storm that fell just short of named status parked along North Carolina’s Atlantic coast, dumping as much as 20 inches of rain, said North Carolina state climatologist Kathie Dello.

Then add Helene, one of the largest storms in the last couple decades and one that held plenty of rain because it was young and moved fast before it hit the Appalachians, said University of Albany hurricane expert Kristen Corbosiero.

“It was not just a perfect storm, but it was a combination of multiple storms that that led to the enormous amount of rain,” Maue said. “That collected at high elevation, we’re talking 3,000 to 6000 feet. And when you drop trillions of gallons on a mountain, that has to go down.”

The fact that these storms hit the mountains made everything worse, and not just because of runoff. The interaction between the mountains and the storm systems wrings more moisture out of the air, Clark, Maue and Corbosiero said.

North Carolina weather officials said their top measurement total was 31.33 inches in the tiny town of Busick. Mount Mitchell also got more than 2 feet of rainfall.

Before 2017’s Hurricane Harvey, “I said to our colleagues, you know, I never thought in my career that we would measure rainfall in feet,” Clark said. “And after Harvey, Florence, the more isolated events in eastern Kentucky, portions of South Dakota. We’re seeing events year in and year out where we are measuring rainfall in feet.”

Storms are getting wetter as the climate change s, said Corbosiero and Dello. A basic law of physics says the air holds nearly 4% more moisture for every degree Fahrenheit warmer (7% for every degree Celsius) and the world has warmed more than 2 degrees (1.2 degrees Celsius) since pre-industrial times.

Corbosiero said meteorologists are vigorously debating how much of Helene is due to worsening climate change and how much is random.

For Dello, the “fingerprints of climate change” were clear.

“We’ve seen tropical storm impacts in western North Carolina. But these storms are wetter and these storms are warmer. And there would have been a time when a tropical storm would have been heading toward North Carolina and would have caused some rain and some damage, but not apocalyptic destruction. ”

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Follow AP’s climate coverage at https://apnews.com/hub/climate

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Follow Seth Borenstein on Twitter at @borenbears

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Associated Press climate and environmental coverage receives support from several private foundations. See more about AP’s climate initiative here. The AP is solely responsible for all content.

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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.”

The Canadian Press. All rights reserved.

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