Scientists find Pair of Black Holes Dining Together in Nearby Galaxy Merger

Credit: ALMA (ESO/NAOJ/NRAO); M. Weiss (NRAO/AUI/NSF)

While studying a nearby pair of merging galaxies using the Atacama Large Millimeter/submillimeter Array (ALMA) – an international observatory co-operated by the U.S. National Science Foundation’s National Radio Astronomy Observatory (NRAO) – scientists discovered two supermassive black holes growing simultaneously near the center of the newly coalescing galaxy. These super-hungry giants are the closest together that scientists have ever observed in multiple wavelengths. What’s more, the new research reveals that binary black holes and the galaxy mergers that create them may be surprisingly commonplace in the Universe...

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Human-approved Medication Brings Back ‘Lost’ Memories in Mice

Human-approved medication brings back 'lost' memories in mice
High magnification image showing part of the mouse hippocampus in which a sparse population of neurons encoding a specific learning event are labelled in red. Neurons that are not activated by the learning event are shown in blue. | Illustration Havekes Lab, University of Groningen

Students sometimes pull an all-nighter to prepare for an exam. However, research has shown that sleep deprivation is bad for your memory. Now, University of Groningen neuroscientist Robbert Havekes discovered that what you learn while being sleep deprived is not necessarily lost, it is just difficult to recall.

Together with his team, he has found a way to make this “hidden knowledge” accessible again days after studying while sleep-deprived using optogenetic approaches, and the human-approved asthma drug...

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Deep Learning-designed Diffractive Processor Computes Hundreds of Transformations in Parallel

Massively parallel universal linear transformations using a wavelength-multiplexed diffractive deep neural network. Image courtesy of Ozcan Research Group, UCLA.

In today’s digital age, computational tasks have become increasingly complex. This, in turn, has led to an exponential growth in the power consumed by digital computers. Thus, it is necessary to develop hardware resources that can perform large-scale computing in a fast and energy-efficient way.

In this regard, optical computers, which use light instead of electricity to perform computations, are promising. They can potentially provide lower latency and reduced power consumption, benefiting from the parallelism that optical systems have. As a result, researchers have explored various optical computing designs.

For instan...

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NASA’s Webb Telescope reveals Links between Galaxies Near and Far

A trio of faint objects (circled) captured in the James Webb Space Telescope’s deep image of the galaxy cluster SMACS 0723 exhibit properties remarkably similar to rare, small galaxies called “green peas” found much closer to home. The cluster’s mass makes it a gravitational lens, which both magnifies and distorts the appearance of background galaxies. We view these early peas as they existed when the universe was about 5% its current age of 13.8 billion years. The farthest pea, at left, contains just 2% the oxygen abundance of a galaxy like our own and might be the most chemically primitive galaxy yet identified.
Credit: NASA, ESA, CSA, and STScI

A new analysis of distant galaxies imaged by NASA’s James Webb Space Telescope shows that they are extremely young and share some rem...

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