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Physics & Mathematics

Astronomers from an international team have used the James Webb Space Telescope to reveal, for the first time, the exact location of the source powering colliding galaxies. Curiously, this source lies outside of the main parts of the galaxies and is not visible at all in the ultraviolet or visible light observed with the Hubble Space Telescope.

‘Engine’ of luminous merging galaxies pinpointed for the first time

Hiroshima University

Categories Physics & Mathematics, Social Sciences

A new collaboration aims to push the boundaries of knowledge about the fundamental character of four-dimensional space-time. (Composite: Rhiannon Montelius. Image Sources: Unsplash and PxHere.)

Unlocking the Secrets of a 4D Cosmos

Categories Physics & Mathematics

Two identical molecules that are colliding form an intermediate complex when they are in resonance. The intermediate complex sets off a reaction to transform the molecules into a new state. Credits:Credit: Juliana Park

Physicists observe rare resonance in molecules for the first time

Categories Physics & Mathematics

Single Carbon Atom Doping Reactions

This one-atom chemical reaction could transform drug discovery

Osaka University

Categories Physics & Mathematics, Technology

Part of the set-up for creating medium-density amorphous ice

Discovery of new ice may change understanding of water

University College London

Categories Physics & Mathematics

Researchers have found a way to create much stronger interactions between photons and electrons, in the process producing a hundredfold increase in the emission of light from a phenomenon called Smith-Purcell radiation. Credits:Courtesy of the researchers

A new path toward ‘quantum light’

University of Cambridge

Categories Physics & Mathematics

This artist's illustration shows how the gravity of a foreground white dwarf star warps space and bends the light of a distant star behind it. Astronomers using NASA's Hubble Space Telescope have for the first time directly measured the mass of a single, isolated white dwarf (the surviving core of a burned-out Sun-like star) – due to this optical trick of nature. The greater the temporary, infinitesimal deflection of the background star's image, the more massive the foreground star is. (This deviation is so small that it is equivalent to observing an ant crawl across the surface of a quarter from 1,500 miles away.) Researchers found that the dwarf is 56 percent the mass of our Sun. This effect, called gravitational lensing was predicted as a consequence of Einstein's theory of general relativity from a century ago. Observations of a solar eclipse in 1919 provided the first experimental proof for general relativity. But Einstein didn't think the same experiment could be done for stars beyond our Sun because of the extraordinary precision required.

For the first time Hubble directly measures mass of a lone white dwarf

Categories Physics & Mathematics, Space

Electro-optic blocks cointegrated for the development of a neuromorphic photonic processor.

Matrix multiplications at the speed of light

International Society for Optics and Photonics

Categories Physics & Mathematics, Technology

Graphic showing how microlensing was used to measure the mass of a white dwarf star.

Astronomers observe light bending around an isolated white dwarf

University of Cambridge

Categories Physics & Mathematics, Space

Closeup of ant with object in its jaws

These ants don’t just walk randomly; they “meander” systematically

Categories Life & Non-humans, Physics & Mathematics

When a beam of light is shone into a water droplet, the light is trapped inside the droplet.

Creating an ‘optical atom’ with water and light

University of Gothenburg

Categories Physics & Mathematics, Technology

Illustration of two a chip comprising two entangled quantum light sources

Quantum physicists make major advance in entanglement

University of Copenhagen

Categories Physics & Mathematics

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