Tag Archives: drills

Russia sends two S-400 battalions to Belarus for drills – Interfax

MOSCOW, Jan 21 (Reuters) – Russia is sending two battalions of S-400 surface-to-air missile systems to Belarus to join military drills there next month, the Interfax news agency said on Friday, at a time of acute tensions with the West over neighbouring Ukraine.

Russian military forces and hardware began arriving in Belarus this week for the “Allied Resolve” drills to be held near the former Soviet republic’s western border with NATO members Poland and Lithuania, and close to its southern flank with Ukraine.

Belarusian and Russian national flags fly during “Day of multinational Russia” event in central Minsk, Belarus June 8, 2019. REUTERS/Vasily Fedosenko

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Western states fear that Russia, which has massed tens of thousands of troops on its borders with Ukraine, is planning a new assault on a country it invaded in 2014. Russia has denied such plans. Lithuania has also said the buildup of Russian troops there was a threat to its security.

Russia’s defence ministry said two S-400 battalions – which typically include eight anti-aircraft missile systems each – have started moving to Belarus from Russia’s Far East by train, Interfax said.

Moscow has said that 12 Sukhoi Su-35 fighter jets and a Pantsir missile system would also be deployed to Belarus for the drills.

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Reporting by Olzhas Auyezov; Editing by William Mallard

Our Standards: The Thomson Reuters Trust Principles.

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EXCLUSIVE As diplomacy stutters, U.S., Israel to discuss military drills for Iran scenario -U.S. official

The Iranian flag waves in front of the International Atomic Energy Agency (IAEA) headquarters, amid the coronavirus disease (COVID-19) pandemic, in Vienna, Austria May 23, 2021. REUTERS/Leonhard Foeger/File Photo

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WASHINGTON, Dec 8 (Reuters) – U.S. and Israeli defense chiefs are expected on Thursday to discuss possible military exercises that would prepare for a worst-case scenario to destroy Iran’s nuclear facilities should diplomacy fail and if their nations’ leaders request it, a senior U.S. official told Reuters.

The scheduled U.S. talks with visiting Israeli Defence Minister Benny Gantz follow an Oct. 25 briefing by Pentagon leaders to White House national security adviser Jake Sullivan on the full set of military options available to ensure that Iran would not be able to produce a nuclear weapon, the official said on Wednesday, speaking on condition of anonymity. Iran denies seeking nuclear weapons, saying it wants to master nuclear technology for peaceful purposes.

The U.S.-Israeli preparations, which have not been previously reported, underscore Western concern about difficult nuclear talks with Iran that President Joe Biden had hoped would revive a 2015 nuclear deal abandoned by his predecessor Donald Trump.

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But U.S. and European officials have voiced dismay after talks last week at sweeping demands by Iran’s new, hardline government, heightening suspicions in the West that Iran is playing for time while advancing its nuclear program.

The U.S. official declined to offer details on the potential military exercises.

“We’re in this pickle because Iran’s nuclear program is advancing to a point beyond which it has any conventional rationale,” the official said, while still voicing hope for discussions.

The Israeli embassy in Washington and Iran’s mission to the United Nations did not immediately respond to requests for comment.

The European Union official chairing the talks has said they will resume on Thursday, and the U.S. special envoy for Iran plans to join them over the weekend. read more

The International Atomic Energy Agency (IAEA) said last week that Iran had started the process of enriching uranium to up to 20% purity with one cascade, or cluster, of 166 advanced IR-6 machines at its Fordow plant, which dug into a mountain, making harder to attack.

The 2015 agreement gave Iran sanctions relief but imposed strict limits on its uranium enrichment activities, extending the time it would need to produce enough fissile material for a nuclear weapon, if it chose to, to at least a year from around two to three months. Most nuclear experts say that period is now considerably shorter.

Underlining how badly eroded the deal is, that pact does not allow Iran to enrich uranium at Fordow at all, let alone with advanced centrifuges.

COMPROMISED

With the deal’s nuclear benefits now badly compromised, some Western officials say there is little time left before the foundation of the deal is damaged beyond repair.

Such drills by the United States and Israel could address calls by Dennis Ross, a former senior U.S. official and Middle East expert, and others to openly signal to Tehran that the United States and Israel are still serious about preventing it from obtaining a nuclear weapon.

“Biden needs to disabuse Iran of the notion that Washington will not act militarily and will stop Israel from doing so,” Ross wrote last month.

Ross even suggested the United States should perhaps signal a willingness to give the Israeli’s the U.S. military’s bunker-busting Massive Ordnance Penetrator, a 30,000-pound bomb.

Asked about such remarks about deterrence, the senior U.S. official said: “When President Biden says Iran will never get a nuclear weapon, I mean, he means it.”

Central Intelligence Agency Director Bill Burns said on Monday that the CIA does not believe Iran’s supreme leader has decided to take steps to weaponize a nuclear device but noted advances in its ability to enrich uranium, one pathway to the fissile material for a bomb.

Burns cautioned that, even if Iran decided to go ahead, it would still require a lot of work to weaponize that fissile material before attaching a nuclear weapon to a missile or other delivery system.

“But they’re further along in their mastery of the nuclear fuel cycle and that’s the kind of knowledge that is very difficult to sanction away or make disappear, as well,” he said.

U.S. officials have also long worried about America’s ability to detect and destroy dispersed components of Iran’s nuclear weaponization program once enough fissile material for a bomb were produced.

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Reporting by Phil Stewart; additional reporting by Arshad Mohammad and Matt Spetalnick; editing by Mary Milliken and Grant McCool

Our Standards: The Thomson Reuters Trust Principles.

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Ukrainian air force holds drills, including air strikes

KYIV, Nov 23 (Reuters) – Ukraine has held drills of its air force, including the practice of airstrikes, on training grounds in the south of the country, the defence ministry said on Tuesday.

It said in a statement that Su-24M and Su-25 planes, under cover of MiG-29 and Su-27 fighters, made simulated airstrikes and hit air and surface targets as though they were in the Black Sea.

Ukraine intensified military exercises amid rising concern over Russian troop movements near Ukrainian borders that Kyiv said could pave the way for a sharp military escalation.

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Reporting by Natalia Zinets

Our Standards: The Thomson Reuters Trust Principles.

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Belarus-Poland border crisis: Russia and Belarus hold military drills

On Friday, Russia and Belarus held joint paratrooper drills near Poland, exercises the Belarusian defense ministry said were “in connection with the buildup of military activity near the state border of the Republic of Belarus.”

Some 15,000 Polish soldiers have been deployed to Poland’s border with Belarus in recent days in reaction to a tense standoff that the European Union, the United States and NATO say is of Belarusian leader Alexander Lukashenko’s making.

NATO said Friday it was monitoring for any escalation or provocation in the situation on its members’ borders with Belarus after the drills.

Western leaders, including prime ministers of neighboring Poland, Latvia and Lithuania, are accusing the Lukashenko regime of manufacturing a migrant crisis on the EU’s eastern frontier as retribution for sanctions over human rights abuses.

Lukashenko’s government has repeatedly denied such claims, instead blaming the West for the crossings and treatment of migrants.

Trapped in the crossfire are upwards of 2,000 people stuck between Poland and Belarus who are now facing conditions the United Nations has called “catastrophic,” with desperate scenes of hunger and hypothermia playing out in freezing forests and at makeshift camps at the border.

Russia, Belarus’ largest (and most important) political and economic partner, continues to defend Minsk’s handling of the border crisis while also denying any involvement in it.

Russia demonstrated that support by flying two long-range Russian Tupolev Tu-22M3 supersonic long-range bombers over Belarusian airspace on Wednesday and on Thursday.

The aircraft, known to have nuclear capabilities, practiced “issues of interaction with ground control points” with armed forces of both countries, the Russian defense ministry said.

Neighboring Ukraine is also scaling up security. On Thursday, it announced it would hold military drills with some 8,500 servicemen and 15 helicopters in an area near its borders with Poland and Belarus to counter a potential migrant crisis.

The show of force unfolding across the region is continuing to test a fragile political order, with allegations from the United States on Russia’s military buildup this week deepening concerns over the potential for a wider geopolitical crisis.

US Secretary of State Antony Blinken said on Wednesday that the US is “concerned by reports of unusual Russian military activity” and mentioned the possibility that Russia may be “attempting to rehash” its 2014 invasion of Ukraine.

Russia hit back at the allegations on Friday, saying that they represented an “empty, groundless escalation of tensions.”

‘This will not succeed’

European Commission President Ursula von der Leyen called the border crisis a “challenge to the whole of the European Union” earlier this week. “This is not a migration crisis. This is the attempt of an authoritarian regime to try to destabilize its democratic neighbors. This will not succeed,” she said.

Western powers are now preparing to levy new sanctions on Belarus, and the EU said it was considering penalties against third-country airlines for contributing to the crisis by transporting people to Minsk, the Belarusian capital.

On Friday, Turkey’s foreign ministry said in a tweet that they would ban people from Syria, Iraq and Yemen — where many of the migrants stuck at the border are from — from flying from Turkish airports to Belarus. The ministry on Thursday fought back against claims it was contributing to the crisis, saying that they “refuse to be portrayed as part of a problem which Turkey is not a party to.”

EU Council President Charles Michel replied to the tweet, saying “thank you” for the “support and cooperation.”

Moscow hasn’t budged however, with Kremlin spokesman Dmitry Peskov dismissing accusations that the Russian carrier Aeroflot had helped refugees travel into Belarus. Statements from Aeroflot demonstrate that it “did not provide and is not providing transportation of migrants to Minsk,” Peskov said, adding that “even if some airlines are engaged in this, it in no way contradicts any international regulations.”

In the US, the White House’s National Security Council announced on Wednesday that it was preparing “follow-up sanctions” designed to hold Belarus accountable for “ongoing attacks on democracy, human rights and international norms.” This is the second round of sanctions announced by the US in recent months. It is not clear when the new measures will be executed.

The EU is also expected to “expand and tighten its sanctions against Lukashenko’s regime,” Germany’s acting Foreign Minister Heiko Maas said Thursday.

The human cost

Meanwhile, conditions for migrants trapped at the border continue to deteriorate, with people at a makeshift migrant camp at Bruzgi, on the Belarusian border, now starving and desperate for firewood in near freezing temperatures.

CNN gained exclusive access into the camp, where chaotic scenes at a food distribution area were unfolding as the Belarusian Red Cross tried to hand out food aid to tightly packed crowds while Belarusian security forces pushed them back. Disappointment and grief is palpable throughout the camp.

Migrants fleeing war-torn countries such as Syria and Iraq had come to Belarus with the expressed purpose of moving deeper into Europe and of trying to find a better life. But now, there’s a bitter sense of disappointment that isn’t happening.

Since the beginning of November, there have been 4,500 recorded border crossing attempts, according to Polish authorities. The Polish border guard said it had recorded around 1,000 crossing attempts in the last few days, including some “large-scale” efforts with groups of more than 100 people trying to breach the fence.

Humanitarian groups are accusing Poland’s ruling party of violating the international right to asylum by pushing people back into Belarus instead of accepting their applications for protection. Under article 14 of the Universal Declaration of Human Rights, everyone has the right to seek and enjoy asylum from persecution in other countries. Poland says its actions are legal.

As the standoff continues, people keep on coming. Belarusian authorities estimate that the number of migrant arrivals to the border could swell to 10,000 in the upcoming weeks if the situation isn’t resolved.

CNN’s Nadine Schmidt, Katharina Krebs, Antonia Mortensen and Magda Chodownik contributed reporting.

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As regional tensions rise, Japan’s ground troops hold their first military drills in decades

Since mid-September, about 100,000 personnel, 20,000 vehicles and 120 aircraft have been participating in various exercises across the country focused on operational readiness.

In recent years, the Indo-Pacific regional has become a focal point of tension, with GSDF officials saying the security environment surrounding Japan is the worst it’s been since the end of World War II.

“This Ground Self-Defense Force exercise is truly focused on improving operational effectiveness, deterrence and response capabilities,” said Col. Noriko Yokota, GSDF spokesperson.

“Each unit is conducting the exercise with an eye to what is necessary to achieve this goal. They are preparing themselves so that they can respond with confidence when they are forced to take further action.”

Earlier this week, North Korea said it had successfully test-fired a new ballistic missile from a submarine that landed in the Sea of Japan, also known as the East Sea. Meanwhile, further south, China has been ramping up pressure on Taiwan by sending military jets into its Air Defense Identification Zone.

Without identifying any country by name, GSDF officials say regional powers are willing to change the status quo by force — and one country in particular continues to develop nuclear weapons, missiles and challenge the non-proliferation system.

“The current security environment surrounding Japan is extremely severe,” said Lt. Gen. Yuichi Togashi, Commanding General of the 2nd Division GSDF. “We, the Self-Defense Forces, are required to enhance the effectiveness of operations.”

Building a defensive force

Troops from the GSDF 2nd Division in Asahikawa, Hokkaido traveled about 2,000 kilometers (1,242 miles) to the Hijudai Manuvering Area in Japan’s Oita prefecture to perform defensive combat drills.

Since arriving in September, they’ve spent weeks building out logistic areas, command posts, battlefield positions and underground triage units. Some are built underground and all are covered in camouflage, making them difficult to identify.

GSDF officials say the drill isn’t taking place to prepare for potential conflict against in any specific region or against any particular country.

But the training environment at Hijudai Manuvering Area has similar terrain to what troops would experience if war broke out in Japan’s southern islands. That includes the Senkaku islands — an uninhabited rocky island chain in the East China Sea — administered by Tokyo but claimed by Beijing, where the islands are known as Diayou.
Tensions over the uninhabited rocky chain — 1,900 kilometers (1,200 miles) southwest of Tokyo but only a third of that distance from Shanghai — have simmered for years, and claims over them date back centuries.
Japanese Defense Minister Nobuo Kishi recently told CNN the islands are unquestionably Japanese territory and would be defended as such.

“(The) Senkaku islands are an inherent part of Japanese territory, both according to international law and looking historically,” Kishi said.

“There is no territorial dispute relating to the Senkaku islands between Japan and other countries. Against Chinese action to Senkaku islands and other parts of the East China Sea, we have to keep sending strong message.

“As Japan’s Defense Ministry and self-defense forces, we have to build up our own military capabilities as well as to respond to this situation.”

Troops training on southern islands

In a marked departure from Japan’s post-World War II pacifism, the combat training portion of the drill at the Hijudai Manuvering Area includes unscripted simulated war games.

The GSDF 2nd Division was broken up into two teams to simulate invaders and defenders with the aim of taking out rival combatants and practicing first aid.

Instead of live ammunition, troops on the ground are armed with simulation weapons that fire lasers. The troops’ uniforms, tanks and other vehicles are all lined with sensors that notify them if they’ve been killed or injured by the enemy.

In the simulated combat drill, if someone is hit, troops on the battlefield apply first aid in the field before taking the individual to a triage unit. Depending on the severity of the simulated injury, injured troops are treated and return to the battlefield or are medevacked to hospital to receive more specialized care.

Other troops are being deployed for drills on Japan’s southern islands — Miyako Island, Amami Oshima, and Yonaguni Island, with the latter just 234 kilometers (145 miles) from Taiwan.

“The deployment of troops in the southwest region is a major concept of the Ground Self-Defense Force,” Yokota said. “We believe that it is important for the SDF to deploy troops wherever they are needed.”

For Japan, these war games have never been more important.

“We are now aware that the security environment surrounding Japan is unprecedentedly severe,” Yakota said.

“In this context, we, the Self-Defense Forces, are preparing for all kinds of contingencies, considering that we have to respond to all kinds of situations.”

Since Japan’s GSDF was established in 1954, the force has never been involved in actual conflict — meaning drills like this are the closest members have ever come to fighting a war. The drills end in mid-November.

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China says it held beach landing drills in Fujian province opposite Taiwan

Democratically ruled Taiwan, claimed by China as its own territory, has complained of stepped-up military and political pressure from Beijing to force it to accept Chinese rule, including massed air force incursions into Taiwan’s air defense identification zone.

The official People’s Liberation Army Daily newspaper, in a brief report on its Weibo microblogging account, said the drills had been carried out “in recent days” in the southern part of Fujian province.

The action had involved “shock” troops, sappers and boat specialists, the Chinese military newspaper added. The troops were “divided into multiple waves to grab the beach and perform combat tasks at different stages,” it added, without providing further details.

It showed a video of soldiers in small boats storming a beach, throwing smoke grenades, breaking through barbed wire defenses and digging trenches in the sand.

The drills appeared to involve a small number of troops.

The weather was clear and the seas were calm — suggesting the drill did not happen on Monday as southern Fujian is currently being affected by a tropical storm passing between Taiwan and the Philippines.

Fujian would be a key launching site for any Chinese invasion of Taiwan due to its geographical proximity.

China routinely carries out military exercises up and down its coast as well as in the disputed South China Sea.

Taiwan has denounced what it calls China’s coercive tactics against it and says it will defend itself if attacked.

Over the weekend, Chinese President Xi Jinping reiterated a vow to “reunify” Taiwan, and Taiwan President Tsai Ing-wen said Taiwan will not be forced to bow to China

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Cristiano Ronaldo drills woman with soccer ball during warmups prior to Champions League match

Soccer star Cristiano Ronaldo drilled a female steward during warmups prior to Manchester United’s Champions League matchup against BSC Young Boys of Switzerland on Tuesday.

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Ronaldo was practicing a free kick when he booted the soccer ball over the crossbar and it hit the stadium worker in the back of the head. She immediately fell to the ground.

Soccer Football – Champions League – Group F – BSC Young Boys v Manchester United – Stadion Wankdorf, Bern, Switzerland- September 14, 2021 A steward lies on the floor after she was hit by a ball from Manchester United’s Cristiano Ronaldo during the warm up before the match REUTERS/Arnd Wiegmann

Soccer Football – Champions League – Group F – BSC Young Boys v Manchester United – Stadion Wankdorf, Bern, Switzerland- September 14, 2021 Manchester United’s Cristiano Ronaldo checks on a steward after she was hit by a ball during the warm up before the match REUTERS/Arnd Wiegmann

ZLATAN IBRAHIMOVIC FIRES BACK AT LEBRON JAMES: ‘SPORTS AND POLITICS ARE 2 DIFFERENT CATEGORIES’

The woman was on the ground for a few minutes, and that’s when Ronaldo went over to her to check and see if she was OK. The steward eventually came back up to her feet with security guards and Ronaldo nearby.

Ronaldo gifted the woman one of his No. 7 jerseys as an apology.

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In the 13th minute of Manchester United’s game against BSC Young Boys, Ronaldo scored a goal to put his side up 1-0. However, the opposition managed to score two goals to come from behind and upset one of the Premier League’s top teams.

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NASA’s Perseverance rover team drills first Martian rock sample

NASA’s Perseverance Mars rover team announced on Thursday that it has successfully cored its first Mars rock. 

A September 1 image of the long, oddly-shaped and dusty Mars rock provided in a release from the agency showed the circular drill hole.

NASA said that initial images downlinked after the events showed an intact sample present in the sample tube after coring. 

NASA SEISMOLOGISTS IMAGE THE INTERIOR OF ANOTHER PLANET FOR THE FIRST TIME

“However, additional images taken after the arm completed sample acquisition were inconclusive due to poor sunlight conditions,” it said, noting that the rover would obtain additional imagery of the sample tube with better lighting before the processing continues.

“Although the Perseverance mission team is confident that the sample is in the tube, images in optimal lighting conditions will confirm its presence,” NASA wrote. 

“The project got its first cored rock under its belt, and that’s a phenomenal accomplishment,” Jennifer Trosper, project manager at NASA’s Jet Propulsion Laboratory, said. “The team determined a location, and selected and cored a viable and scientifically valuable rock. We did what we came to do. We will work through this small hiccup with the lighting conditions in the images and remain encouraged that there is sample in this tube.” 

Using a rotary-percussive drill and a hollow coring bit – that holds the sample tube –  at the end of its robotic arm to extract the samples, Perseverance maneuvered the corer, bit and open end of the sample tube to be photographed by its Mastcam-Z instrument.

The initial images showed the end of a cored rock within the sample tube before “Percy” began a procedure called “percuss to ingest.” 

The step vibrates the drill bit and tube five times, which can help a sample slide down farther into the tube and can ride the tube’s lip of residual material. 

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Following “percuss to ingest,” Perseverance took its second set of Mastcam-Z images, in which the lighting was poor and the “internal portions of the sample tube are not visible.”

NASA said that Friday images would be taken when the sun is in a more favorable position and that photos would also be captured after sunset in order to “diminish point-sources of light that can saturate an image.”

The photos are set to be returned to Earth on Saturday morning.

If the new images are still uncertain, the team still has several steps it can take including using the rover’s Sampling and Caching System’s volume probe to confirm that the sample is in the tube. 

Notably, a previous attempt at sampling Mars rock in early August went awry when the team realized the rover had failed to capture the crumbly rock in its tube. 

NASA then decided to move on to the South Séítah region of the red planet’s Jezero Crater. 

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Perseverance landed on Mars on Feb. 18 and began its science phase – and the hunt for signs of ancient microbial life –  on June 1.

In the future, the rock and regolith samples the rover collects and caches will be returned in joint missions with the ESA (European Space Agency).

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NASA’s Perseverance Rover Drills a Mars Rock on Its Second Attempt

As the Perseverance rover drilled into a rock on Wednesday to collect a sample from Jezero Crater on Mars, Justin Simon, a planetary scientist at NASA’s Johnson Space Center in Houston, felt both nervous and excited. He has the honor of serving as the “sample shepherd,” leading the effort from millions of miles away, but the pressure’s on. “These samples not only will allow us to understand the geology of the crater but also minerals likely related to the history of water there,” he said yesterday.

But first, the rover had to actually capture a chunk of rock in a test-tube-sized container. An initial attempt in early August had come up empty. That first rock, nicknamed “Roubion,” simply crumbled to dust as the drill bored into it, and none of those bits made it into the container.

Simon can now breathe a sigh of relief. Perseverance’s second try, with a different rock, appears to have successfully extracted a Martian core slightly thicker than a pencil.

“We got that image of just a spectacular-looking core, a fantastic-looking cylinder, broken off cleanly. It looks geologically very interesting, something scientists of the future will enjoy working on,” says Ken Farley, a Caltech geochemist and project scientist of the Perseverance mission, which is led by NASA’s Jet Propulsion Laboratory in Pasadena, California.

But the analysis of the new sample is going to take awhile, because NASA scientists haven’t been able to get clear photographs due to low lighting conditions, which makes the images tough to interpret. To add more drama for the scientists, when Perseverance did a “percuss-to-ingest” procedure—shaking the sample to make sure the tube wasn’t overfilled, which would make the system jam when it’s stored—one image appeared to show an empty sample tube. (They’re pretty sure they got the sample, but they’re going to try taking more images in better light over the next couple of days.)

Perseverance’s first drill attempt, which essentially pulverized the sample, wasn’t a complete failure, as it yielded evidence suggesting the rock had been weathered, worn down by a river flowing into the lake crater billions of years ago. “It always had been possible that this lake was a transient event, like maybe a comet, rich in water, hit Mars and made lakes, and then it boiled away or froze within tens of years. But that would not produce the weathering we see,” said Farley in an interview earlier this week.

Since that rock was too powdery, the scientists then piloted the rover to a new area, looking for a different kind of rock to sample, using the Ingenuity copter to scout ahead. Perseverance trundled slightly to the west, where on a ridgeline the researchers found a larger, boulder-like rock, which they nicknamed “Rochette” and which seemed less likely to disintegrate when the rover deployed its tools on it. “It looks like a rock that, if you could throw it, would clank down on the ground. A good, healthy rock,” Farley said.

Before each sampling attempt, Perseverance performs reconnaissance by snapping a bunch of photos of a candidate rock. Last weekend, it also performed an abrasion test to see if Rochette was durable enough to sample. The rover is equipped with a rotary percussive drill (with extra drill bits) that both spins and hammers into the rock. This tool helps clear away dust and chip through the weathered outer layer. The abrasion was spectacularly successful, according to Farley, so the scientists decided to go ahead with grabbing a sample. Perseverance extended its 7-foot-long robotic arm, fired up the drill, and carefully extracted a core sample. Then it rotated the arm’s “hand” so that the sample tube could be inspected.

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NASA’s Mars Perseverance Rover Drills Rock Samples Successfully

This time, the rock did not disappear.

After a perplexing failure last month, NASA’s latest Mars rover, Perseverance, was able to drill a sample of rock on Wednesday. The rover took pictures of the rock in the tube and sent the images to Earth so that mission managers could be sure they had not come up empty again. Then Perseverance will seal the collection tube and put it away in its belly.

The success, visible in images posted online on Thursday, is most likely a relief to scientists working on the mission.

“You can see a beautiful rock core,” Kenneth A. Farley, a professor of geochemistry at the California Institute of Technology and the project scientist for Perseverance, said in an email on Thursday morning.

One of the key tasks for Perseverance is to collect rocks and soil that will eventually be brought back to Earth by another mission so that scientists can exhaustively study them using state-of-the-art instruments in their laboratories, the way they have with moon rocks from the Apollo and Soviet missions of the 1960s and ’70s.

And yet, on Aug. 6, the first time that Perseverance drilled, collected and sealed a rock sample, everything appeared to go flawlessly — except the tube was empty.

“It was definitely a bit of despair,” Dr. Farley said in an interview before the latest drilling attempt. “Everybody was so ready to declare victory. And then somebody said, ‘Yeah, here’s a picture, there’s nothing in the tube.’ It was very deflating.”

The rover used its cameras to look around and see if the rock core had somehow dropped to the ground. But there was no sign of it. The rock sample had, it seemed, vanished.

The greatest worry was that Perseverance’s intricate drilling mechanism had suffered a crippling malfunction and that it would not be able to collect any samples at all. But after reviewing the data, the engineers and scientists concluded it was the rock, not the rover, that was to blame.

“The rock simply wasn’t our kind of rock,” Jennifer Trosper, the mission’s project manager, wrote in a NASA blog post on Aug. 19. The rover’s systems had performed as expected — “quite well, as a matter of fact,” Ms. Trosper wrote — but the rock was too fragile.

“The act of coring into it resulted in the rock breaking apart into powder and small fragments of material, which were not retained in the tube due to their size,” Ms. Trosper said. She added that despite numerous tests on Earth, “we had not encountered a rock in our test suite that behaved in quite this manner.”

Dr. Farley concedes that there were warning signs that the August rock might not have been the best one to try first. Its brown color indicated rust, it contained salts, and it was full of holes.

Rust, salts and holes meant the rock had been sitting in a lake or groundwater for a very long time. That was potentially a fantastic scientific find. The mineralogical changes caused by water could illuminate billions of years ago when Mars was wet and habitable.

But a rusty, salty rock filled with holes could also be very crumbly. “We learned a lesson,” Dr. Farley said.

The operation was not a complete loss. The tube has no rock or soil, but it does contain sealed, uncontaminated Martian air, something the scientists had planned to collect at another time.

For the second drilling attempt, the rover drove about 400 yards onto a ridge slightly higher than the surrounding landscape, “and we selected the hardest looking rock you could find up there,” Dr. Farley said. This boulder, nicknamed Rochette, survived through the ages and was not eroded away by the winds, strong evidence that it is not crumbly.

The boulder looks like a piece of a hardened lava, which can be precisely dated. Thus, scientists will be able to determine how old this boulder is, and it helps pin down the ages of lower, older layers.

“This was a high-value target,” Dr. Farley said.

It will be more than a decade before Dr. Farley and other scientists can get their hands on it. Perseverance at some point will probably drop the hermetically sealed tubes on the Martian surface, to await pickup by a future rover, still on the drawing board.

That rover will take the rock samples to a small rocket that will launch the samples on a trip back to Earth, but they will not arrive until the 2030s.

Perseverance will continue exploring a 28-mile-wide crater named Jezero, especially an ancient, dried-up river delta along the western rim. The rover is accompanied by a small robotic helicopter named Ingenuity that was added to the mission to test the ability to fly through the thin air of Mars.

While NASA had planned to leave Ingenuity behind after a series of test flights, it proved so successful that the helicopter continues to follow along with Perseverance, acting as a scout of the terrain ahead. And it is improving the rover’s scientific mission, too.

The scientists had intended to visit a site that looked striking in images taken from orbit. “Then we looked at the helicopter images,” Dr. Farley said, and were less impressed.

“We will save a bunch of time by not driving over there,” he said.

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