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

Japan reopens Kashiwazaki-Kariwa Plant despite public concerns

La centrale nucléaire japonaise de Kashiwazaki-Kariwa, la plus grande au monde, a repris ses activités mercredi pour la première fois depuis la catastrophe de Fukushima en 2011, malgré les inquiétudes persistantes d’une partie de la population.

La remise en service a eu lieu à 19h02 heure locale (10h02 GMT), a indiqué à l’AFP Tatsuya Matoba, porte-parole de la compagnie Tokyo Electric Power (Tepco).

Le gouverneur de la préfecture de Niigata, où se situe la centrale, avait donné son feu vert à la reprise le mois dernier, en dépit d’une opinion publique divisée. Selon une enquête menée en septembre par la préfecture elle-même, 60 % des habitants se déclaraient opposés au redémarrage, contre 37 % favorables.

Mardi, plusieurs dizaines de manifestants ont bravé le froid et la neige pour protester près de l’entrée du site, sur les rives de la mer du Japon.

« L’électricité de Tokyo est produite à Kashiwazaki. Pourquoi seuls les habitants d’ici devraient-ils être exposés au danger ? Cela n’a aucun sens », a déclaré à l’AFP Yumiko Abe, une riveraine de 73 ans.

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La centrale de Kashiwazaki-Kariwa avait été mise à l’arrêt lorsque le Japon a fermé l’ensemble de ses réacteurs nucléaires à la suite du triple désastre de mars 2011 — un séisme, un tsunami et un accident nucléaire — survenu à Fukushima.

International

Markets rise as Trump halts Europe tariffs and floats Greenland agreement framework

U.S. President Donald Trump on Wednesday lifted his threat to impose new tariffs on several European countries and said he had outlined the framework of a future agreement on Greenland during a meeting in Davos with NATO Secretary General Mark Rutte.

“Based on this understanding, I will not impose the tariffs that were scheduled to take effect on February 1,” Trump wrote on his social media platform Truth Social, without providing details about the proposed “framework.”

The announcement boosted financial markets. Wall Street, which had been trading slightly higher, extended its gains following Trump’s message, while the U.S. dollar strengthened against the euro.

Trump has repeatedly insisted that Greenland, rich in mineral resources, is ‘vital’ to the security of the United States and NATO, particularly as Arctic ice melts and global powers compete for strategic advantage in the region amid rising tensions with China and Russia.

Last week, the U.S. president threatened to impose tariffs of up to 25% on eight European countries for supporting Denmark and sending a military exploratory mission to Greenland. All of the targeted countries are NATO members, including the United Kingdom, Germany, and France, Europe’s largest economies.

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Trump said on Wednesday that additional discussions are underway regarding the “Golden Dome” missile defense system, specifically in connection with Greenland.

He assigned Vice President JD Vance, Secretary of State Marco Rubio, and special envoy Steve Witkoff to lead the negotiations.

Hours before his post, Trump ruled out the use of force to seize Greenland for the first time, but demanded “immediate negotiations” for its acquisition, reiterating his view that only the United States can guarantee the security of the Arctic island.

International

Venezuela’s interim president predicts 37% increase in revenues for 2026

Venezuela’s interim president, Delcy Rodríguez, said Wednesday that the country’s revenues are expected to increase by about 37% in 2026, in a statement made during a session of the Federal Government Council at the Miraflores Presidential Palace in Caracas.

Rodríguez said the projected rise in foreign currency income comes as agreements on Venezuelan oil sales with the United States are being implemented, including deals in which Washington will trade Venezuelan crude and manage the proceeds before transferring funds to Caracas.

“This year, revenues expressed in foreign currency will increase by 37%,” Rodríguez declared, according to EFE. She noted that the increase will also benefit regional governments and local authorities. “You will have more resources for your management, which I know you need,” she added.

Rodríguez said the distribution formula for revenues will remain the same as in 2025: 53% for communes, 29% for state governments, 15% for municipalities, and 3% for institutional strengthening. She also said the government would intervene to “correct imbalances” in how funds are allocated, particularly among some municipal and regional authorities.

The announcement follows reporting that Venezuela received at least $300 million from oil revenues tied to a U.S.–Venezuela deal that could involve up to 50 million barrels of crude. Washington officials have said the interim government met U.S. requirements under the agreement.