International

NASA spaceship deflected asteroid in test to save Earth

Photo: Jim Watson / AFP

AFP / Issam Ahmed

NASA on Tuesday said it had succeeded in deflecting an asteroid in a historic test of humanity’s ability to stop an incoming cosmic object from devastating life on Earth.

The fridge-sized Double Asteroid Redirection Test (DART) impactor deliberately smashed into the moonlet asteroid Dimorphos on September 26, pushing it into a smaller, faster orbit around its big brother Didymos, said NASA chief Bill Nelson.

“DART shortened the 11 hour 55 minute orbit to 11 hours and 23 minutes,” he said. Speeding up Dimorphos’ orbital period by 32 minutes exceeded NASA’s own expectation of 10 minutes.

“We showed the world that NASA is serious as a defender of this planet,” added Nelson.

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The asteroid pair loop together around our Sun every 2.1 years, and pose no threat to our planet.

But they are ideal for studying the “kinetic impact” method of planetary defense, in case an actual approaching object is ever detected.

DART’s success as a proof-of-concept has made a reality of science fiction — notably in films such as “Armageddon” and “Don’t Look Up.”

Astronomers rejoiced in stunning images of matter spreading out thousands of miles in the wake of the impact — pictures collected by Earth and space telescopes, as well as a mini satellite that had traveled to the zone with DART.

Pseudo-comet

Thanks to its temporary new tail, Dimorphos, which is 530-foot (160-meter) in diameter or roughly the size of a big Egyptian pyramid, has turned into a manmade comet.

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But quantifying just how well the test worked required an analysis of light patterns from ground telescopes, which took a few weeks to become apparent.

The binary asteroid system, which was around 6.8 million miles (11 million kilometers) from Earth at impact, is visible only as a single dot from the ground.

Ahead of the test, NASA scientists said the results of the experiment would reveal whether the asteroid is a solid rock, or more like a “rubbish pile” of boulders bound by mutual gravity.

If an asteroid is more solid, the momentum imparted by a spaceship will be limited. But if it is “fluffy” and significant mass is pushed at high velocity in the opposite direction to impact, there will be an additional boost.

Never actually photographed before, Dimorphos appeared as a speck of light around an hour before impact.

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Its egg-like shape and craggy, boulder-dotted surface finally came into clear view in the last few moments, as DART raced toward it at roughly 14,500 miles (23,500 kilometers) per hour.

Mass extinction

Very few of the billions of asteroids and comets in our solar system are considered potentially hazardous to our planet, and none are expected in the next hundred years or so.

But wait long enough, and it will happen.

The geological record shows, for example, that a six-mile wide asteroid struck Earth 66 million years ago, plunging the world into a long winter that led to the mass extinction of the dinosaurs along with 75 percent of all species.

An asteroid the size of Dimorphos, by contrast, would only cause a regional impact, such as devastating a city.

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Kinetic impact with a spaceship is just one way to defend the planet, albeit the only method possible with current technology.

Should an approaching object be detected early, a spaceship could be sent to fly alongside it for long enough to divert its path via using the ship’s gravitational pull, creating a so-called gravity tractor.

Another option would be launching nuclear explosives to redirect or destroy an asteroid.

NASA believes the best way to deploy such weapons would be at a distance, to impart force without blowing the asteroid to smithereens, which could further imperil Earth.

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People sit at their workstations within the Mission Operations Center during the Double Asteroid Redirection Test (DART) Technology Media Workshop Telecon Briefing and tour at the Johns Hopkins Applied Physics Laboratory in Laurel, Maryland, on September 12, 2022, ahead of the September 26th project test mission. - The goal of the DART mission, which launched in November 2021, is to hit an asteroid with a spacecraft to slightly alter its trajectory. (Photo by Jim WATSON / AFP)

International

Oil prices surge again as Middle East tensions persist

Oil prices climbed again on Friday for a second consecutive session, as markets remained concerned about a prolonged conflict in the Middle East with no tangible diplomatic progress.

North Sea Brent crude for May delivery rose 4.22% to close at $112.57 per barrel.

Meanwhile, U.S. West Texas Intermediate (WTI) approached the $100 mark, settling at $99.64, up 5.46%.

The decision by U.S. President Donald Trump to delay by ten days his ultimatum for the reopening of the Strait of Hormuz failed to reassure market participants.

“It means there will be ten additional days of disruptions in the Middle East for crude and refined product flows,” said Andy Lipow, of Lipow Oil Associates.

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“For prices to come down, a resolution to the conflict is necessary,” Lipow added. “And even in the event of a ceasefire, it is not certain that Iran would allow oil shipments to pass through the Strait of Hormuz.”

International

Young Spanish Woman Receives Euthanasia After Legal Battle, Sparking Debate

A 25-year-old Spanish woman, Noelia Castillo, received euthanasia on Thursday following a prolonged legal dispute with her father.

She passed away at a care center in Sant Pere de Ribes, about 40 kilometers from Barcelona, where she had been living for some time, according to Spanish media reports.

In an interview broadcast a day earlier on Antena 3, Castillo expressed her exhaustion after enduring prolonged suffering. She indicated that her decision was influenced by a combination of personal circumstances and health-related challenges, including family conflicts and a condition of paraplegia following a previous incident that left her with lasting physical consequences.

Spain legalized euthanasia in 2021, becoming one of the few countries that allow patients under strict conditions to seek medical assistance to end their lives in order to avoid what the law defines as unbearable suffering.

The case has reignited debate in Spain over the ethical, legal, and family dimensions surrounding euthanasia, as well as the broader issue of support for individuals in vulnerable situations.

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International

Over 300 U.S. Troops Wounded Since Start of Iran Conflict, CENTCOM Says

More than 300 U.S. service members have been injured since the start of the conflict with Iran on February 28, the United States Central Command confirmed on Friday.

“Since the beginning of Operation Epic Fury, approximately 303 U.S. service members have been wounded. The vast majority of these injuries are minor, and 273 troops have already returned to duty,” said U.S. Navy Captain Tim Hawkins.

A U.S. official, speaking on condition of anonymity to AFP, indicated that 10 American troops remain seriously injured.

According to the latest figures, an additional 13 U.S. service members have been killed since the conflict began, including seven in the Gulf region and six in Iraq.

Meanwhile, Iran’s armed forces warned on Friday that hotels hosting U.S. troops in the region could be considered legitimate military targets.

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“When U.S. forces enter a hotel, from our perspective that hotel becomes American,” said armed forces spokesperson Abolfazl Shekarchi in remarks broadcast on state television.