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

Iranian leader warns foreign powers have “no place” in Strait of Hormuz

Iran’s Supreme Leader, Mojtaba Khamenei, said Thursday that the Persian Gulf is entering a new era marked by a “bright” future without the presence of the United States in the region.

His remarks came during the commemoration of Persian Gulf Day, amid ongoing regional tensions following recent military confrontations involving Iran, the United States, and Israel.

“Today, two months after the largest military buildup and aggression by the bullies of the world in the region and the humiliating defeat of the United States, a new chapter is being written for the Persian Gulf and the Strait of Hormuz,” Khamenei stated.

The Iranian leader insisted that the future of the region would be free from American influence and focused instead on the internal development and prosperity of Gulf nations.

“By the power and strength of God, the bright future of the Persian Gulf region will be a future without the United States and dedicated to the progress, welfare, and prosperity of its nations,” he said.

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Khamenei also questioned the effectiveness of U.S. military bases in the region, arguing that they do not provide security even for Washington’s allies.

“Foreigners who come from thousands of miles away and commit evil and malicious acts have no place there except at the bottom of its waters,” he declared.

In addition, the Iranian leader defended new measures being prepared by Tehran to regulate maritime traffic through the Strait of Hormuz, including fees for vessels passing through the strategic waterway. According to Khamenei, the policies would generate economic benefits and greater stability for the region.

Regional tensions remain high following the conflict that erupted on February 28 between the United States and Israel against Iran, leading to strategic blockades in the Strait of Hormuz, a route through which nearly 20% of the world’s oil supply previously passed. The situation has disrupted maritime trade and contributed to rising global oil prices.

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Central America

U.S. and Regional Allies Back Panama Amid Dispute With China

The United States, Bolivia, Costa Rica, Guyana, Paraguay and Trinidad and Tobago issued a joint statement in support of Panama’s sovereignty, arguing that China’s recent actions represent an attempt to politicize maritime trade and undermine the sovereignty of nations in the hemisphere.

“We are closely monitoring China’s selective economic pressure and recent actions affecting vessels flying the Panamanian flag,” the statement released Tuesday said. “Panama is a pillar of our maritime trading system and, as such, must remain free from undue external pressure.”

The statement comes amid growing tensions surrounding the Panama Canal and the operation of key ports linked to global trade.

At the end of January, Panama’s Supreme Court invalidated the legal framework supporting the 1997 concession that granted Panama Ports Company, a subsidiary of CK Hutchison, the right to operate the Balboa and Cristóbal terminals located on the Pacific and Atlantic entrances of the Panama Canal.

The ruling followed mounting pressure from the United States to curb Chinese influence around the strategic waterway, through which roughly 5% of global maritime trade passes.

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CK Hutchison, which managed the ports for nearly three decades, rejected the court’s decision and accused Panamanian authorities of illegally confiscating its assets. The company has launched international arbitration proceedings against Panama, seeking more than $2 billion in damages.

Following the court ruling, reports emerged of increased detentions and inspections of Panamanian-flagged vessels in China, actions widely viewed as retaliatory measures.

On Wednesday, China’s Foreign Ministry dismissed the joint statement as “completely unfounded and misleading,” accusing the United States of politicizing port operations and warning that Beijing would take steps to protect its interests in Panama.

International

King Charles III Says U.S.-UK Alliance Is “Irreplaceable and Unbreakable”

King Charles III of the United Kingdom reaffirmed the strength of the British-American relationship on Tuesday during a speech before the United States Congress, describing the alliance between the two nations as “irreplaceable and unbreakable.”

The address, delivered at the Capitol, marked the first speech by a British monarch before Congress since Queen Elizabeth II in 1991 and comes at a time of political tensions between Donald Trump’s administration and the Labour government of Prime Minister Keir Starmer.

“As President Trump himself observed during his state visit to Britain last autumn, the bond of kinship and identity between the United States and the United Kingdom is invaluable and eternal. It is irreplaceable and unbreakable,” the king said.

While reflecting on the upcoming 250th anniversary of U.S. independence, which will be commemorated this year, Charles III stated that the partnership between the two countries “was born out of disagreement, but is no less strong because of it.”

The monarch emphasized the democratic values shared by both nations and noted that major global changes have occurred whenever the two allies found common ground.

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“When we have found that way to agree, great changes have taken place not only for the benefit of our peoples, but for all peoples,” he said.

King Charles also quoted British Prime Minister Keir Starmer, who recently described the relationship as “an indispensable alliance.”

Concluding his speech, the monarch described the shared history of the United States and the United Kingdom as “a story of reconciliation, renewal, and an extraordinary partnership.”

He added that Washington and London have forged “one of the most consequential alliances in human history.”

“I pray with all my heart that our alliance continues to defend our shared values, together with our partners in Europe, the Commonwealth, and around the world, and that we ignore calls urging us to become increasingly isolationist,” Charles III stated.