International
NASA spaceship deflected asteroid in test to save Earth
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.
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.
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.
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.
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
Trump says GOP ‘learned a lot’ after democratic election wins
U.S. President Donald Trump said that he and the Republican Party “learned a lot” from the Democratic victories in Tuesday’s state and local elections. He also compared Democrats to “kamikaze pilots” over the ongoing budget standoff.
Speaking at an event with Republican senators on Wednesday, Trump described the results as an unexpected setback.
“These were very Democratic areas, but I don’t think it was good for Republicans. In fact, I don’t think it was good for anyone. But we had an interesting night and we learned a lot,” he said during remarks broadcast by the White House.
Trump agreed with pollsters that two key factors led to Republican losses in New York’s mayoral race and the gubernatorial contests in New Jersey and Virginia.
International
Bolivia’s Jeanine Áñez freed after Supreme Court annuls her conviction
Former Bolivian interim president Jeanine Áñez was released from a women’s prison in La Paz on Thursday, where she had spent more than four and a half years for an alleged coup, after her conviction was annulled, AFP journalists confirmed.
Dozens of supporters and family members gathered outside the facility to celebrate her release. Áñez left the prison waving a Bolivian flag around 15:00 GMT.
“It is comforting to see that justice will once again prevail in Bolivia. She was the only woman who took on the role with bravery and courage,” said Lizeth Maure, a 46-year-old nurse who had come to show her support.
Áñez, a 58-year-old lawyer and conservative politician, governed Bolivia for nearly a year until November 2020, when she handed power to leftist leader Luis Arce.
She was arrested in 2021 and sentenced the following year to 10 years in prison for “resolutions contrary to the Constitution,” accused of illegally assuming the presidency after Evo Morales resigned in 2019 amid social unrest.
Her sentence was overturned on Wednesday by the Supreme Court of Justice, Bolivia’s highest judicial authority.
The court ruled that Áñez should have been subjected to a “trial of responsibilities” before Congress— a constitutional process reserved for sitting presidents, vice presidents, ministers, and top judges — rather than prosecuted in an ordinary criminal court.
As she was welcomed by relatives and supporters upon release, Áñez declared:
“I feel the satisfaction of having fulfilled my duty to my country, of never having bowed down. And I will never regret having served Bolivia when it needed me.”
International
Peru declares Mexico’s president Persona Non Grata over political asylum dispute
Peru’s Congress declared Mexican President Claudia Sheinbaum persona non grata on Thursday, accusing her of “unacceptable interference in internal affairs” after granting political asylum to former Peruvian Prime Minister Betssy Chávez.
The motion, introduced by right-wing parties, passed with 63 votes in favor, 33 against, and two abstentions. Lawmakers argue that Sheinbaum has maintained a hostile stance toward Peru since taking office.
Peru severed diplomatic relations with Mexico on Monday following the asylum decision. Chávez, who is facing charges for her alleged involvement in former President Pedro Castillo’s failed coup attempt in December 2022, remains under protection at the Mexican embassy residence in Lima.
Following the diplomatic break, interim President José Jerí said on X that Mexico’s chargé d’affaires in Peru, Karla Ornela, has been notified by the foreign ministry that she must leave the country within a strict deadline.
The Mexican government condemned Lima’s decision as “excessive and disproportionate,” asserting that offering asylum to Chávez is a legitimate act grounded in international law and does not constitute interference in Peru’s domestic matters.
Trump says GOP ‘learned a lot’ after democratic election wins
Bolivia’s Jeanine Áñez freed after Supreme Court annuls her conviction
Peru declares Mexico’s president Persona Non Grata over political asylum dispute
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