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
Gates Foundation to close by 2045 as Bill Gates pledges to donate $200 Billion
When Bill and Melinda French Gates established the Gates Foundation in 2000, they envisioned an organization that would continue its work for decades after their deaths. But now, Microsoft co-founder Bill Gates says he doesn’t want to wait that long to give away most of his fortune.
On Thursday, Gates announced that he plans to donate “virtually all” of his estimated $200 billion fortune over the next 20 years and will dissolve the foundation on December 31, 2045.
The announcement comes amid deep cuts by the Trump administration to funding for health, foreign aid, and public assistance programs — the very causes the Gates Foundation supports. The shift raises concerns about setbacks in global health research and critical development initiatives.
Gates says he wants to accelerate the foundation’s work in global health and equity, and hopes the move will inspire other billionaires to follow suit. In a blog post published Thursday morning, he emphasized that the foundation’s final phase should serve as a model for large-scale philanthropic impact.
This new pledge builds on Gates’s long-standing commitment to philanthropy. Alongside French Gates and Warren Buffett, he co-founded the Giving Pledge in 2010, which encourages billionaires to donate the majority of their wealth either during their lifetimes or in their wills. The campaign now has more than 240 signatories worldwide.
International
Bill Gates accuses Elon Musk of endangering the world’s poorest children
Bill Gates, co-founder of Microsoft turned global health philanthropist, sharply criticized Elon Musk in a recent interview with The New York Times, saying the tech billionaire is “the richest man in the world and is involved in the deaths of the world’s poorest children.”
At 69, Gates announced that the Bill & Melinda Gates Foundation will cease operations by 2045, and he urged the next generation of billionaires to step up. However, he expressed concern that today’s wealthy individuals are less committed to humanitarian work than they were two decades ago.
He cited Elon Musk as a prime example: “He’s the one who cut the USAID budget. He shredded it — all because he didn’t attend some party that weekend.”
Gates argued that Musk “could have been a great philanthropist,” but instead, “the richest man in the world is now contributing to the deaths of the world’s poorest children.” He pointed to how cuts to USAID have disrupted essential programs fighting HIV, malaria, and polio.
Gates called on the global elite to do more: “It’s not that we’re running out of rich people. There will be more, and they’ll reflect on what AI has done — or hasn’t — and what governments have done — or haven’t.”
Looking ahead, he urged future billionaires to commit to greater philanthropy, especially as his own foundation phases out: “The rich of today should do more. The rich twenty years from now should do more.”
Despite his criticisms, Gates maintained his trademark optimism. He dismissed fears that repeated U.S. administrations will continue cutting humanitarian budgets: “I don’t think there will be administration after administration slashing these things. If we look 20 years ahead, I believe we’ll continue reducing child mortality.”
Gates also expressed faith in artificial intelligence, suggesting it can provide medical expertise in remote regions on par with doctors with decades of experience — potentially even better than what’s available in wealthy countries.
International
VP JD Vance to World Cup visitors: “Enjoy the game, then go home”
U.S. Vice President JD Vance issued a light-hearted but firm warning to international visitors planning to attend the 2026 FIFA World Cup, which will be co-hosted by the United States, Canada, and Mexico.
“We know we’ll have visitors, probably from close to a hundred countries. We want them to come. We want them to celebrate. We want them to enjoy the games,” said Vance during a press conference on Tuesday focused on the organization of upcoming major sporting events in the U.S.
“But when it’s over, they’ll have to go home,” he added.
Vance, speaking in a joking tone, also mentioned Homeland Security Secretary Kristi Noem, saying, “Otherwise, they’ll have to speak with Secretary Noem.”
The comment came during the first joint working session aimed at preparing for the 2026 World Cup, which will feature 48 national teams and take place across multiple cities in North America.
Gates Foundation to close by 2045 as Bill Gates pledges to donate $200 Billion
Bill Gates accuses Elon Musk of endangering the world’s poorest children
VP JD Vance to World Cup visitors: “Enjoy the game, then go home”
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