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Galaxies without dark matter baffle astronomers

This Hubble image captures a group of galaxies that are unusual because they do not appear to contain dark matter.Credit: NASA/ESA/P. Van Dokkum, Yale University. Astronomers believe that galaxies cannot form without the gravity of dark matter. So a galactic path devoid of this mysterious substance, for no apparent reason, would be a great find. … Read more

A new basic law that unlocks the limitations of fusion energy

Illustration of cloud-like ionized plasma in the ITER tokamak fusion reactor. credit: ITER Physicists at EPFL, in a major European collaboration, have revised one of the fundamental laws that has been established[{” attribute=””>plasma and fusion research for over three decades, even governing the design of megaprojects like ITER. The update demonstrates that we can actually … Read more

Phantom ‘mirror world’ may be cause of cosmic controversy

Artist view of the COBE satellite. Credit: Matthew Verdolivo, University of California, Davis New research suggests an invisible “mirror world” of particles interacting with our world only via gravity may be the key to solving a major puzzle in cosmology today – the problem of the Hubble constant. The Hubble constant is the expansion rate … Read more

Insights for better characterization of nuclear physics and the harsh environments of cosmic explosions

An illustration of a conventional modern nova shows a bright white dwarf star near the center accumulating fuel in an orange disk of its neighboring main-sequence star (highlighted in bright orange). Credit: NASA/JPL-Caltech Michigan State researchers helped peer inside a new supernova – a type of astrophysical nuclear explosion – without leaving Earth. These stellar … Read more

Remarkably strong coupling of charge carriers in Mott antimagnetic bilayer insulators

For coupling or non-coupling: the bound state of two spin-free moving charges (left) wins the independent spin-charge pairs (right) in their competition for the lowest energy. Credit: Bohrdt et al. Over the past few years, many physicists and materials scientists have been investigating superconductivity, the complete disappearance of electrical resistance observed in some solids. Superconductivity … Read more