Defense satellites used to be big, costly, and “juicy” targets for attack. Now the Pentagon is aiming for a more resilient network of nearly 1,000 mini orbiters.
Last year, NASA undertook its first planetary defense mission with the Double Asteroid Redirection Test (DART). The goal was to divert the moonlet Dimorphos from its orbit, demonstrating that an asteroid could be redirected in the case of a catastrophic course toward Earth.
The spacecraft’s impact, while altering the moonlet’s orbit, also resulted in the dispersal of 37 boulders from its surface. Some of these space rocks are as wide as 22 feet off its surface.
The DART mission was watched intently across the globe on September 26, 2022. The spacecraft successfully shifted Dimorphos’s orbit from an original 11 hours and 55 minutes to 11 hours and 23 minutes post-impact.
New research indicates that Australia and New Zealand are the two best places on Earth to survive a nuclear war. The recently published set of calculations don’t focus on blast-related deaths or even deaths caused by radiation fall-out, which most estimates say would number in the hundreds of millions, but instead look at how a nuclear winter caused by nuclear bomb explosions would affect food supplies, potentially leading to the starvation of billions.
Nuclear War Simulations Performed For Decades
Since the first atomic bombs were dropped on the Japanese cities of Hiroshima and Nagasaki in 1945, effectively spelling the end of World War II, war game theorists have looked at a myriad of simulations to determine the potential effects of a full-blown nuclear battle. Many simulations look at the potentially hundreds of millions that would likely die in the initial blasts, while others have tried to model the slower but equally as deadly body count from radiation sickness.
According to Chinese military experts, they have created a novel cooling mechanism that enables high-energy lasers to run “infinitely” without producing any waste heat. South China Morning Post claims that researchers at the National University of Defence Technology in Changsha, Hunan province, claim that the novel cooling system fully avoids the dangerous heat produced by high-energy laser operation.
The advancement of robotics and artificial intelligence (AI) has paved the way for a new era in warfare. Gone are the days of manned ships and traditional naval operations. Instead, the US Navy’s Task Force 59 is at the forefront of integrating AI and robotics into naval operations. With a fleet of autonomous robot ships, the Navy aims to revolutionize the way wars are fought at sea.
The Persian Gulf serves as a testing ground for Task Force 59’s fleet of robot ships. These unmanned vessels, ranging from solar-powered kayaks to surfboard-style boats, are equipped with state-of-the-art technology. Their purpose is to act as the eyes and ears of the Navy, collecting data through cameras, radar, and hydrophones. Pattern-matching algorithms help differentiate between oil tankers and potential threats like smugglers.
One particular vessel, the Triton, stands out with its ability to submerge for extended periods. This feature allows it to evade enemy detection and resurface when it is safe to do so. The Triton can stay submerged for up to five days, utilizing this time to recharge its batteries and transmit valuable information back to base.
The need for transparency around AI-generated content is clear, but the value of measures like watermarks is not.
A few miles away, White House aides and reporters scrambled to figure out whether a viral online image of the exploding building was in fact real.
It wasn’t. It was AI-generated. Yet government officials, journalists, and tech companies were unable to take action before the image had real impact. It not only caused confusion but led to a dip in financial markets.
Continue reading “Why watermarking AI-generated content won’t guarantee trust online” »
Beijing’s compromise of Tokyo’s classified cyber networks could prevent greater strategic coordination between Japan’s Defense Ministry and the Pentagon.
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The Australian military is funding a project to grow intelligent “mini-brains” in petri dishes. The goal is to use these “DishBrains” to design better AIs — and, eventually, even combine the two, creating AIs merged with processing features of human brain cells.
Continue reading “Australian military is funding a computer chip merged with human brain cells” »
Japanese Prime Minister Fumio Kishida warned of Russia’s nuclear threat and reaffirmed a pledge to work to make the world free of nuclear weapons in a speech marking 78 years since the atomic bomb fell on Hiroshima on Sunday. “As the only country to have experienced the horror of nuclear devastation in war, Japan will press on tirelessly with its efforts to bring about ‘a world without nuclear weapons,’” Kishida said in remarks delivered in Hiroshima, in a tribute to the victims, their families and those still suffering aftereffects of the bomb.
The magnetohydrodynamic (MHD) drive certainly sounds like something out of science fiction — using an array of magnets and electrodes, this high-tech propulsion technology promises to silently propel a craft through the water without any moving parts. As long as you can provide it with a constant supply of electricity, anyway.
Of course, as is often the case, the devil is in the details. Even with the obvious scientific and military applications of such a propulsion unit, scaling MHD technology up has proven difficult. But as [Jay Bowles] of Plasma Channel shows in his latest video, that doesn’t mean you can’t experiment with the concept at home. Even better, getting verifiable results is much easier than you’d think.
Continue reading “A Magnetohydrodynamic Drive In The Kitchen Sink” »
