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Astronomy Oct 1, 2025

Data from dark-energy observatories indicate universe may 'end in a big crunch' at 33 billion years old

The universe is approaching the midpoint of its 33-billion-year lifespan, a Cornell physicist calculates with new data from dark-energy observatories. After expanding to its peak size about 11 billion years from now, it will ...

Astronomy Oct 1, 2025

Dark matter and dark energy may only be a cosmic illusion

For decades, astronomers have believed that dark matter and dark energy make up most of the universe. However, a new study suggests they might not exist at all. Instead, what we perceive as dark matter and dark energy could ...

Astronomy Oct 1, 2025

Nobel laureate George Smoot, who researched the universe's origins at UC Berkeley, dies at 80

Nobel laureate Dr. George Smoot, who conducted groundbreaking research into the origins of the universe during a long career at the University of California, Berkeley, and the Lawrence Berkeley National Laboratory, has died, ...

Plasma Physics Sep 26, 2025

3D particle-in-cell simulations demonstrate first true steady state in turbulent plasma

Plasma is a state of matter that emerges when a gas is heated to sufficiently high temperatures, prompting some electrons to become free from atoms. This state of matter has been the focus of many astrophysical studies, as ...

General Physics Sep 24, 2025

Information could be a fundamental part of the universe, and may explain dark energy and dark matter

For more than a century, physics has been built on two great theories. Einstein's general relativity explains gravity as the bending of space and time.

Astronomy Sep 23, 2025

Largest-ever cosmological simulation created using algorithms for Euclid mission

The consortium running the European Space Agency's (ESA) Euclid mission has published the most extensive simulation of the cosmos to date. The modeling was based on algorithms developed by UZH professor Joachim Stadel.

Astronomy Sep 16, 2025

Tying theory to practice when searching for dark energy

Science is a story of coming up with theories then doing our best to disprove them. That is especially true for theories on a grand, cosmological scale, though disproving them can be particularly hard.

Astronomy Sep 16, 2025

Mapping the universe, faster and with the same accuracy

If you think a galaxy is big, compare it to the size of the universe: it's just a tiny dot which, together with a huge number of other tiny dots, forms clusters that aggregate into superclusters, which in turn weave into ...

Astronomy Sep 15, 2025

Is dark energy evolving? Astrophysicists consider the possibilities

Dark energy—the term used to describe whatever is causing the universe to expand at an increasing rate—is one of the universe's greatest mysteries. The most widely accepted theory currently suggests that dark energy is constant, ...

Astronomy Sep 4, 2025

New algorithm hushes unwanted noise in LIGO, may lead to more black hole discoveries

LIGO, the Laser Interferometer Gravitational-wave Observatory, has been called the most precise ruler in the world for its ability to measure motions more than 10,000 times smaller than the width of a proton. By making these ...

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