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 urges Putin to reach peace deal
On Monday, U.S. President Donald Trump reiterated his desire for Russian President Vladimir Putin to “reach a deal” to end the war in Ukraine, while also reaffirming his willingness to impose sanctions on Russia.
“I want to see him reach an agreement to prevent Russian, Ukrainian, and other people from dying,” Trump stated during a press conference in the Oval Office at the White House.
“I think he will. I don’t want to have to impose secondary tariffs on Russian oil,” the Republican leader added, recalling that he had already taken similar measures against Venezuela by sanctioning buyers of the South American country’s crude oil.
Trump also reiterated his frustration over Ukraine’s resistance to an agreement that would allow the United States to exploit natural resources in the country—a condition he set in negotiations to end the war.
International
Deportation flight lands in Venezuela; government denies criminal gang links
A flight carrying 175 Venezuelan migrants deported from the United States arrived in Caracas on Sunday. This marks the third group to return since repatriation flights resumed a week ago, and among them is an alleged member of a criminal organization, according to Venezuelan authorities.
Unlike previous flights operated by the Venezuelan state airline Conviasa, this time, an aircraft from the U.S. airline Eastern landed at Maiquetía Airport, on the outskirts of Caracas, shortly after 2:00 p.m. with the deportees.
Interior Minister Diosdado Cabello, who welcomed the returnees at the airport, stated that the 175 repatriated individuals were coming back “after being subjected, like all Venezuelans, to persecution” and dismissed claims that they belonged to the criminal organization El Tren de Aragua.
However, Cabello confirmed that “for the first time in these flights we have been carrying out, someone of significance wanted by Venezuelan justice has arrived, and he is not from El Tren de Aragua.” Instead, he belongs to a gang operating in the state of Trujillo. The minister did not disclose the individual’s identity or provide details on where he would be taken.
International
Son of journalist José Rubén Zamora condemns father’s return to prison as “illegal”
The son of renowned journalist José Rubén Zamora Marroquín, José Carlos Zamora, has denounced as “illegal” the court order that sent his father back to a Guatemalan prison on March 3, after already spending 819 days behind barsover a highly irregular money laundering case.
“My father’s return to prison was based on an arbitrary and illegal ruling. It is also alarming that the judge who had granted him house arrest received threats,” José Carlos Zamora told EFE in an interview on Saturday.
The 67-year-old journalist was sent back to prison inside the Mariscal Zavala military barracks on March 3, when Judge Erick García upheld a Court of Appeals ruling that overturned the house arrest granted to him in October. Zamora had already spent 819 days in prison over an alleged money laundering case.
His son condemned the situation as “unacceptable”, stating that the judge handling the case “cannot do his job in accordance with the law due to threats against his life.”
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