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The joint development team of Professor Shibata (the University of Tokyo), JEOL Ltd. and Monash University succeeded in directly observing an atomic magnetic field, the origin of magnets (magnetic force), for the first time in the world. The observation was conducted using the newly developed Magnetic-field-free Atomic-Resolution STEM (MARS). This team had already succeeded in observing the electric field inside atoms for the first time in 2012. However, since the magnetic fields in atoms are extremely weak compared with electric fields, the technology to observe the magnetic fields had been unexplored since the development of electron microscopes. This is an epoch-making achievement that will rewrite the history of microscope development.

Electron microscopes have the highest spatial resolution among all currently used microscopes. However, in order to achieve ultra-high resolution so that atoms can be observed directly, we have to observe the sample by placing it in an extremely strong lens magnetic field. Therefore, atomic observation of magnetic materials that are strongly affected by the lens magnetic field such as magnets and steels had been impossible for many years. For this difficult problem, the team succeeded in developing a lens that has a completely new structure in 2019. Using this new lens, the team realized atomic observation of magnetic materials, which is not affected by the lens magnetic field. The team’s next goal was to observe the magnetic fields of atoms, which are the origin of magnets (magnetic force), and they continued technological development to achieve the goal.

This time, the joint development team took on the challenge of observing the magnetic fields of iron (Fe) atoms in a hematite crystal (α-Fe₂O₃) by loading MARS with a newly developed high-sensitivity high-speed detector, and further using computer image processing technology. To observe the magnetic fields, they used the Differential Phase Contrast (DPC) method at atomic resolution, which is an ultrahigh-resolution local electromagnetic field measurement method using a scanning transmission electron microscope (STEM), developed by Professor Shibata et al. The results directly demonstrated that iron atoms themselves are small magnets (atomic magnet). The results also clarified the origin of magnetism (antiferromagnetism) exhibited by hematite at the atomic level.

Dmitry Rogozin, the head of Russian space agency Roscosmos, issued a stark warning.

The future of the ISS has come into question amid conflict in Ukraine. Dmitry Rogozin, the head of Roscosmos, has warned that blocking cooperation could have catastrophic consequences.

Nature is a never-ending source of inspiration for scientists, but our artificial devices usually don’t communicate well with the real thing. Now, researchers at Linköping University have created artificial organic neurons and synapses that can integrate with natural biological systems, and demonstrated this by making a Venus flytrap close on demand.

The new artificial neurons build on the team’s earlier versions, which were organic electrochemical circuits printed onto thin plastic film. Since they’re made out of polymers that can conduct either positive or negative ions, these circuits form the basis of transistors. In the new study, the team optimized these transistors and used them to build artificial neurons and synapses, and connect them to biological systems.

When the transistors detect concentrations of ions with certain charges, they switch, producing a signal that can then be picked up by other neurons. Importantly, biological neurons operate on these same ion signals, meaning artificial and natural nerve cells can be connected.

Roscosmos’s head warns the ISS mission could end with a destructive deorbit in a threat to the US, EU and other countries.

WASHINGTON — The European Space Agency will establish a committee with representatives from both inside and outside the space industry to develop options for a European human space exploration program.

The creation of what ESA called a “high-level advisory group” was one of the major outcomes of a one-day “space summit” held in Toulouse, France, Feb. 16 that brought together representatives of member states of both ESA and the European Union to discuss future European space initiatives.

Josef Aschbacher, director general of ESA, said the proposal for the advisory group came from French President Emmanuel Macron. “We got a very clear message from President Macron that such a group is needed. He has asked ESA to put the group together,” he said at a press conference at the end of the summit.

The Webb team continues to make progress in aligning the observatory’s mirrors. Engineers have completed the first stage in this process, called “Segment Image Identification.” The resulting image shows that the team has moved each of Webb’s 18 primary mirror segments to bring 18 unfocused copies of a single star into a planned hexagonal formation.

Astronauts representing countries in direct armed conflict have never worked on the space station. Right now, the International Space Station crew consists of U.S. astronauts Raja Chari, Mark Vande Hei, Thomas Marshburn and Kayla Barron; Matthias Maurer, a German from the European Space Agency; and Russian cosmonauts Anton Shkaplerov and Pyotr Dubrov.

Economic sanctions may affect the space programs on Earth, Mastracchio says, but the space-station crews never saw the impact of anything. “The programs themselves still get along,” he says. “It was really just, we were friends before we went up to space, and you’re working up there relying on each other and you continue to do that.” Chamitoff says he wishes the world would take more notice of cooperative operations in space, which could be a better model for how to do things geopolitically. “The space station has been an amazing project that’s brought 15 countries together for 30 years,” he says. “When things like this happen and there’s these kind of tensions, you kind of wonder, ‘Does anybody notice that we’re working together and it’s going great?’”

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