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

Federal immigration agents kill man in Minneapolis, sparking protests and outrage

Federal immigration agents shot and killed a 37-year-old Minneapolis man during an operation on Saturday, authorities confirmed, sparking new protests and deepening outrage over federal immigration enforcement in the city.

The victim, identified as Alex Jeffrey Pretti, was a U.S. citizen and intensive care nurse who worked at a Veterans Affairs hospital and was widely respected in his community, according to colleagues and news reports.

Officials said the shooting occurred during a targeted immigration raid in south Minneapolis. The Department of Homeland Security (DHS) described the incident as an act of self-defense by agents who believed the man posed a threat.

However, videos reviewed by multiple outlets and eyewitnesses show Pretti holding a phone and not displaying a weapon before being pepper-sprayed, tackled by agents and then shot multiple times, raising serious questions about the official account.

The killing comes amid a broader federal immigration enforcement operation in the city and follows another controversial shooting in early January in which Renée Good, a 37-year-old U.S. citizen, was fatally shot by an ICE agent, leading to widespread protests and criticism of federal tactics.

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International

Delcy Rodríguez seeks political agreements after Maduro’s ouster

Venezuela’s interim president, Delcy Rodríguez, on Saturday called for “reaching agreements” with the opposition to achieve “peace” in the country, which the United States says it now controls following the military operation that removed President Nicolás Maduro from power.

Rodríguez, who previously served as Maduro’s vice president, assumed interim leadership after the leftist leader was captured on January 3 during a military incursion that left nearly 100 people dead.

In her first public statements since taking office, Rodríguez signaled a shift in the strained relationship between Caracas and Washington, while also committing to the release of a “significant number” of political prisoners.

“There can be no political or partisan differences when it comes to the peace of Venezuela,” Rodríguez said during an address in the coastal state of La Guaira, broadcast on state television VTV.

“From our differences, we must speak to one another with respect. From our differences, we must meet and reach agreements,” she added.

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The day before, Rodríguez instructed the head of Parliament — her brother Jorge Rodríguez — to convene talks with various political sectors in the country aimed at achieving “concrete and immediate results.”

International

Bogotá and Quito Seek Dialogue After Tariffs and Power Cut Escalate Tensions

Bogotá and Quito will hold an emergency bilateral summit next week amid recent developments that have strained relations between the two countries.

Tensions escalated this week after Ecuadorian President Daniel Noboa unexpectedly announced a 30% tariff on Colombian imports. Colombia responded with a reciprocal measure, imposing the same tariff on around 20 Ecuadorian products and suspending electricity exports to Ecuador.

Aware that electricity imports are critical to easing Ecuador’s recent energy crises, Quito further imposed a 30% tariff on the transportation of Colombian oil through its territory.

However, recent statements from the Ecuadorian government suggest that dialogue between the two sides has intensified in recent hours. Ecuador’s Minister of Foreign Affairs, Gabriela Sommerfeld, confirmed that active conversations are under way.

In Colombia, segments of the business sector have welcomed the prospect of negotiations. The National Business Council (Consejo Gremial Nacional, CGN), for instance, urged both governments to restore commercial relations, warning that the dispute “puts jobs and regional economic stability at risk.”