New ‘metalens’ shifts focus without tilting or moving

Polished glass has been at the center of imaging systems for centuries. Their precise curvature enables lenses to focus light and produce sharp images, whether the object in view is a single cell, the page of a book, or a far-off galaxy. Changing focus to see clearly at all these...

Experiment reveals new options for synchrotron light sources

Accelerator experts from the Helmholtz-Zentrum Berlin (HZB), the German federal metrology institute Physikalisch-Technische Bundesanstalt (PTB) and Tsinghua University in Beijing have used a laser to manipulate electron bunches at PTB's Metrology Light Source so that they emitted intense light pulses having a laser-like character. Using this method, specialized synchrotron radiation...

New study suggests supermassive black holes could form from dark matter

A new theoretical study has proposed a novel mechanism for the creation of supermassive black holes from dark matter. The international team find that rather than the conventional formation scenarios involving 'normal' matter, supermassive black holes could instead form directly from dark matter in high density regions in the centers...

The world’s largest radio telescope should open its skies to all

The Square Kilometre Array (SKA) Observatory has been more than 25 years in the planning and design, but finally launched earlier this month with the first meeting of its governing council. Construction of what will be the world’s largest radio telescope will start this summer, after an international treaty governing...

World’s first video of a space-time crystal

A German-Polish research team has succeeded in creating a micrometer-sized space-time crystal consisting of magnons at room temperature. With the help of the scanning transmission X-ray microscope Maxymus at Bessy II at Helmholtz Zentrum Berlin, they were able to film the recurring periodic magnetization structure in a crystal. Published in...

Perseverance rover gives high-definition panoramic view of landing site

NASA's Mars 2020 Perseverance rover got its first high-definition look around its new home in Jezero Crater on Feb. 21, after rotating its mast, or "head," 360 degrees, allowing the rover's Mastcam-Z instrument to capture its first panorama after touching down on the Red Planet on Feb 18. It was...

Potassium nucleus loses some of its magic

A new study at ISOLDE finds no signature of a "magic" number of neutrons in potassium-51, challenging the proposed magic nature of nuclei with 32 neutrons. The magic seems to be ebbing away from some atomic nuclei. The latest measurements of the sizes of potassium nuclei rich in neutrons show...

Quantum collaboration gives new gravity to the mysteries of the universe

Scientists have used cutting-edge research in quantum computation and quantum technology to pioneer a radical new approach to determining how our Universe works at its most fundamental level. An international team of experts, led by the University of Nottingham, have demonstrated that only quantum and not classical gravity could be...