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Voyager 1, after overcoming a computer issue, has resumed sending scientific data from two of its instruments, with plans to recalibrate the remaining two soon. This marks significant progress in restoring the spacecraft, which is over 15 billion miles from Earth and requires over 22 hours for communications to travel one way.

NASA ’s Voyager 1 has resumed returning science data from two of its four instruments for the first time since November 2023, when a computer issue arose with the spacecraft. The mission’s science instrument teams are now determining steps to recalibrate the remaining two instruments, which will likely occur in the coming weeks. The achievement marks significant progress toward restoring the spacecraft to normal operations.

Progress in Troubleshooting.

In a study published in Nature Materials, scientists from the University of California, Irvine describe a new method to make very thin crystals of the element bismuth – a process that may aid in making the manufacturing of cheap flexible electronics an everyday reality.

“Bismuth has fascinated scientists for over a hundred years due to its low melting point and unique electronic properties,” said Javier Sanchez-Yamagishi, assistant professor of physics & astronomy at UC Irvine and a co-author of the study. “We developed a new method to make very thin crystals of materials such as bismuth, and in the process reveal hidden electronic behaviors of the metal’s surfaces.”

The bismuth sheets the team made are only a few nanometers thick. Sanchez-Yamagishi explained how theorists have predicted that bismuth contains special electronic states allowing it to become magnetic when electricity flows through it – something essential for quantum electronic devices based on the magnetic spin of electrons.

I found this on NewsBreak:


TSMC is the world’s largest chipmaker, and it produces a massive percentage of the world’s advanced computer chips—by some estimates over the past few years, even around 90%. What happens if something were to happen in that part of the world to disturb this chipmaking ability? It’d be catastrophic, of course, but TSMC and its main machine supplier, Dutch company ASML, say the machines wouldn’t fall into hostile hands.

Citing people close to the matter, Bloomberg reports both TSMC and ASML have ways to disable the lithographic machines located in Taiwan. This kill switch would be able to be remotely activated, should such a drastic action ever be required.

Over the past few years, there’s been a lot of speculation about what would happen to TSMC’s semiconductor fabs in the event of an invasion by the Chinese military. TSMC makes the world’s most advanced chips at its Taiwan facilities, so the prospect of those fabs being taken over or controlled by a hostile force is not a pleasant scenario to consider. However, now it’s been revealed for the first time that the machines have remote kill switches, which would render them idle in the case of Chinese aggression.

This revelation about TSMC’s machines comes from Bloomberg reporters, who say they spoke with several people “familiar with the matter.” Dutch company ASML makes the machines TSMC uses and has built a kill switch directly into the hardware TSMC uses. The report says US officials approached ASML with concerns about Chinese aggression against TSMC, and ASML has assured them it can disable the machines remotely if necessary. The Dutch company has also been running simulated shutdowns on its machines to understand better how such a scenario would play out in the real world and what risks it included.

Quantum computers, computing devices that leverage the principles of quantum mechanics, could outperform classical computing on some complex optimization and processing tasks. In quantum computers, classical units of information (bits), which can either have a value of 1 or 0, are substituted by quantum bits or qubits, which can be in a mixture of both 0 and 1 simultaneously.

“In quantum many-body theory, we are often faced with the situation that we can perform calculations using a simple approximate interaction, but realistic high-fidelity interactions cause severe computational problems,” says Dean Lee, Professor of Physics from the Facility for Rare Istope Beams and Department of Physics and Astronomy (FRIB) at Michigan State University and head of the Department of Theoretical Nuclear Sciences.

Practical Applications and Future Prospects

Wavefunction matching solves this problem by removing the short-distance part of the high-fidelity interaction and replacing it with the short-distance part of an easily calculable interaction. This transformation is done in a way that preserves all the important properties of the original realistic interaction. Since the new wavefunctions are similar to those of the easily computable interaction, the researchers can now perform calculations with the easily computable interaction and apply a standard procedure for handling small corrections – called perturbation theory.