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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)

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International

Mexican Navy Ships Deliver Third Shipment of Humanitarian Aid to Cuba

Two logistics support vessels from the Mexican Navy — the ARM Papaloapan and the ARM Huasteco — docked again on Friday in the bay of Havana carrying a third shipment of humanitarian aid for Cuba.

The vessels had previously arrived on the Caribbean island on February 28 with a second cargo that included 1,200 tons of food, sent to help alleviate the country’s ongoing crisis, which has worsened following the U.S. oil restrictions affecting fuel supplies to the island.

Cuba’s deputy foreign minister Josefina Vidal confirmed the new shipment in a social media post.

“Two ships carrying a third shipment of aid from the Government and the people of Mexico for the Cuban people are now arriving at the port of Havana. Thank you Mexico for your solidarity with Cuba,” she wrote.

Previous aid shipments

During the second shipment, the Papaloapan transported 1,078 tons of beans and powdered milk, while the Huastecocarried 92 tons of beans and 23 tons of assorted food products collected by social organizations with support from the government of Mexico City.

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In recent months, Mexico has become the largest provider of humanitarian aid to Cuba, sending around 2,000 tons of supplies, mostly staple foods and hygiene products, in the two shipments prior to Friday’s delivery.

The first shipment alone included 814 tons of food.

Cuba praises Mexico’s support

Hours before the ships arrived, Cuban President Miguel Díaz-Canel highlighted Mexico’s support during a televised appearance, describing the country as “a friendly and brotherly nation that has shown tremendous solidarity,”particularly praising Mexican President Claudia Sheinbaum.

Díaz-Canel also addressed reports suggesting that Mexican donations were being resold in state-run stores, dismissing them as a “disinformation campaign” promoted by right-wing groups.

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International

Ecuador Declares 60-Day National Emergency After Deadly Floods and Landslides

Ecuador has declared a 60-day national emergency to address the impact of a severe rainy season that has left 11 people dead and more than 50,000 affected since January, the government’s disaster management authority announced Friday.

Prolonged heavy rains accompanied by thunderstorms have caused river overflows and landslides, mainly in the coastal provinces of Guayas, El Oro, Esmeraldas, Los Ríos, Manabí and Santa Elena, as well as in the Andean provinces of Lojaand Chimborazo.

According to the Secretariat for Risk Management of Ecuador, the emergency declaration was issued “due to the level of impact caused nationwide on the population, the road network, infrastructure, and livelihoods.”

“The emergency declaration is aimed at responding to the effects and negative impacts and preventing their further spread,” the agency said in a statement.

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International

Trump Pushes for Regime Change in Cuba as Havana Confirms Talks With Washington

U.S. President Donald Trump has made no secret of his desire for political change in Cuba, located just 150 kilometers from the United States. Washington considers the island an “exceptional threat,” citing its close ties with Russia, Chinaand Iran, longtime allies of Havana.

Trump has urged Cuba to “reach a deal” with Washington or face consequences, as the island struggles with a severe energy crisis that has nearly paralyzed its economy after the United States cut oil shipments from Venezuela, its main fuel supplier. The U.S. has also warned other countries against selling fuel to Havana.

Cuban President Miguel Díaz-Canel confirmed that Cuban officials have recently held talks with representatives of the U.S. government. The statement came during a meeting with senior members of the ruling Communist Party of Cuba and the executive committee of the Council of Ministers, according to footage broadcast on Cuban television.

“These conversations have been aimed at seeking solutions through dialogue to the bilateral differences that exist between our two nations,” Díaz-Canel said.

Reports of intermediaries and possible negotiations

According to television images, among those attending the meeting was Raúl Guillermo Rodríguez Castro, grandson of former Cuban leader Raúl Castro. Although he holds no official government position, U.S. media have identified him as a possible interlocutor with U.S. Secretary of State Marco Rubio in what have been described as secret discussions between Washington and Havana.

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For some Cubans, any potential agreement with Washington is viewed pragmatically. “As long as it benefits us, we can reach an agreement — but on our terms,” said Sergio Guerra, a 55-year-old agricultural vendor, speaking to AFP.

Díaz-Canel’s remarks confirm earlier statements by Trump, who indicated in January that his administration had already begun contacts with senior Cuban officials.

Mexico calls for diplomacy

Meanwhile, Mexico welcomed the possibility of dialogue after recently sending more than 2,000 tons of humanitarian aid to Cuba to help mitigate the crisis.

Mexican President Claudia Sheinbaum said her country would always promote peace and diplomatic dialogue, particularly in response to what she described as the long-standing injustice of the U.S. embargo on the Cuban people.

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