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.
International
Mexico Arrests CJNG Leader “El Jardinero” in Nayarit
Mexican authorities arrested Audias Flores, known as “El Jardinero,” on Monday during a naval operation in the western state of Nayarit, delivering another major blow to the Cártel Jalisco Nueva Generación (CJNG).
Flores was considered one of the top regional leaders within the cartel and had reportedly overseen criminal operations along Mexico’s Pacific coast. Security analysts viewed him as a potential successor to slain drug kingpin Nemesio Oseguera.
The arrest was carried out by Mexico’s Navy Special Forces in a planned operation, according to Security Minister Omar García Harfuch.
The United States Department of the Treasury had previously identified Flores as a “significant foreign narcotics trafficker,” while U.S. authorities offered a reward of up to $5 million for information leading to his capture and extradition.
A U.S. grand jury indicted Flores in 2021 on charges including conspiracy to distribute cocaine and heroin.
His capture comes months after the reported death of “El Mencho,” an operation that Mexican authorities considered a priority due to the cartel leader’s alleged involvement in a 2020 assassination attempt against García Harfuch.
International
Suspect Armed With Shotgun and Knives Detained at White House Correspondents Dinner
U.S. authorities confirmed Saturday that the suspect who stormed into the White House Correspondents’ Association Dinner while President Donald Trump was attending acted alone, adding that there is no ongoing threat to the public following the incident, which left one Secret Service agent injured.
Acting Metropolitan Police Department chief Jeff Carroll said during a press conference that the suspect was carrying “a shotgun, a handgun, and multiple knives” when he attempted to pass through a Secret Service security checkpoint inside the hotel lobby at approximately 8:36 p.m. local time.
“At this point, everything indicates that this was a lone actor, a lone gunman,” Carroll stated, adding that investigators have found no preliminary evidence suggesting the involvement of additional suspects.
During the exchange of gunfire inside the hotel corridors, the suspect was not struck by bullets but was subdued by law enforcement officers and later transported to a hospital for medical evaluation.
A member of the United States Secret Service Uniformed Division was shot during the incident, though the bullet was stopped by the officer’s ballistic vest, preventing serious injuries. The agent was taken to a hospital and is reportedly “in good spirits,” according to Carroll.
The shooting prompted the immediate evacuation of President Trump, Melania Trump, and several senior officials attending the event after multiple gunshots were heard outside the hotel’s main ballroom.
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