Hypersonic weapons are the next frontier of great power competition between the United States, Russia, and China. The Army and Navy want to expedite the development of the missile and hope to field it in 2023.
Their latest missile test was a success.
By Caleb Larson
Continue reading “The Army and Navy’s Hypersonic Missile is a Go” »
Not all the companies that won Skyborg contracts are assured to score orders to build prototypes.
SpaceX is launching South Korea’s first dedicated military communications satellite on Monday, with a target liftoff time of 5 PM EDT (2 PM PDT). The launch window spans nearly four hours, ending at 8:55 PM EDT (5:55 PM PDT), so SpaceX has considerable flexibility in terms of when the launch could actually take place.
The Falcon 9 rocket being used for this mission includes a first-stage booster that flew previously on SpaceX and NASA’s Demo-2 mission — the historic mission that carried astronauts on board a SpaceX rocket for the first time. That launch, which took place on May 30, saw astronauts Bob Behnken and Doug Hurley successfully delivered to the International Space Station — where they’re currently preparing to depart on Demo-2’s concluding trip home on August 1.
This mission will include a recovery attempt for the first stage, using SpaceX’s “Just Read the Instructions” drone landing ship in the Atlantic Ocean.
In December 2019, Donald Trump signed the U.S. Space Force Act, peeling off an orbit-and-beyond branch of the military, much as the Air Force grew out of the Army in the 1940s.
For now, the Space Force still resides within the Air Force, but nearly 90 of this year’s approximately 1000 Air Force Academy graduates became the first officers commissioned straight into the new organization. Some of those graduates were members of an academy group called the Institute for Applied Space Policy and Strategy (IASPS). Featuring weekly speakers and formalized research projects the students hope to turn into peer-reviewed papers, the group aims to game out the policies and philosophies that could guide military space activity when they are old enough to be in charge. In particular, these young cadets are interested in whether the Space Force might someday have a military presence on the Moon, and how it might work with civilians.
That activity could put the Space Force in conflict with scientists, who typically view the cosmos as a peaceful place for inquiry. But part of the club’s mission is speculating about that interplay—between the military and civilian scientists, civil space agencies, and private companies. Cadet J. P. Byrne, who will graduate in 2021, is the group’s current president. He chatted with ScienceInsider about the institute’s work. This interview has been edited for length and clarity.
Continue reading “U.S. Air Force cadets study idea of Space Force bases on the Moon” »
Work from home caused by the coronavirus pandemic has accelerated conversations about zero-trust, several IT officials have said recently.
One idea, which has been in gestation for some years, could be about to have its break-out moment. A new agreement, the Treaty on the Prohibition of Nuclear Weapons (TPNW), is expected to become international law next year — and scientists have a chance to play a part in helping it to succeed.
Seventy-five years after the bombing of Hiroshima and Nagasaki, a new treaty offers renewed hope for a nuclear-free world.
Just recycle the hydrogen and bring to another layer in the sun :3.
Remember the movie Sunshine, where astronomers learn that the Sun is dying? So a plucky team of astronauts take a nuclear bomb to the Sun, and try to jump-start it with a massive explosion. Yeah, there’s so much wrong in that movie that I don’t know where to start. So I just won’t.
Over the past five years factories, universities, and national laboratories all over the world have been working to build the components for the plant, some of which weigh several hundred tons, including a magnet powerful enough to lift an aircraft carrier. It will take another five years to piece all the parts together and get the reactor ready for its first test run.
“Constructing the machine piece by piece will be like assembling a three-dimensional puzzle on an intricate timeline,” director-general of ITER Bernard Bigot said in a press release. “Every aspect of project management, systems engineering, risk management, and logistics of the machine assembly must perform together with the precision of a Swiss watch.”
The hope is that by 2025 the plant will be able to produce “first plasma,” a test designed to make sure the reactor works; the test will produce roughly 500 megawatts of thermal power. It will be another decade until the plant is expected to produce enough energy to be commercially viable, though. That will involve building an even larger plasma chamber to provide 10–15 times more electrical power.
Barakah, which was originally scheduled to open in 2017, has been dogged by delays and is billions of dollars over budget. It has also raised myriad concerns among nuclear energy veterans who are concerned about the potential risks Barakah could visit upon the Arabian Peninsula, from an environmental catastrophe to a nuclear arms race.
Experts have raised concerns about potential risks Barakah plant could pose to the environment and regional security.
Continue reading “UAE starts first nuclear reactor at controversial Barakah plant” »
