Search results for cosmic repulsion

Astronomy Jan 9, 2024

Dark energy is one of the biggest puzzles in science and we're now a step closer to understanding it

Over ten years ago, the Dark Energy Survey (DES) began mapping the universe to find evidence that could help us understand the nature of the mysterious phenomenon known as dark energy. I'm one of more than 100 contributing ...

General Physics Sep 27, 2023

Antimatter embraces Earth, falling downward like normal matter: Study reveals gravity's effect on matter's elusive twin

For those still holding out hope that antimatter levitates rather than falls in a gravitational field, like normal matter, the results of a new experiment are a dose of cold reality.

General Physics Jul 10, 2023

Quantum proton billiards: ATLAS experiment reports fundamental properties of strong interactions

The quantum nature of interactions between elementary particles allows drawing non-trivial conclusions even from processes as simple as elastic scattering. The ATLAS experiment at the LHC accelerator reports the measurement ...

Astronomy Jun 19, 2023

Why is the sky dark at night? The 200-year history of a question that transformed our understanding of the universe

As dawn rose over the German city of Bremen on May 7, 1823, Heinrich Olbers put the finishing touches to an article that left his name in history. After the deaths of his wife and daughter, Dr. Olbers had recently given up ...

Astronomy Aug 8, 2022

What part of a space rock survives all the way to the ground?

When a small asteroid enters Earth's atmosphere from space, its surface is brutally heated, causing melting and fragmenting. Therefore, why the rocks near the surface survive to the ground as meteorites has been somewhat ...

Astronomy May 19, 2022

Three decades of space telescope observations converge on a precise value for the Hubble constant

Completing a nearly 30-year marathon, NASA's Hubble Space Telescope has calibrated more than 40 "milepost markers" of space and time to help scientists precisely measure the expansion rate of the universe—a quest with a ...

Astronomy Jan 12, 2022

A step closer to understanding the 'cold spot' in the cosmic microwave background

After the Big Bang, the universe, glowing brightly, was opaque and so hot that atoms could not form. Eventually cooling down to about minus 454 degrees Fahrenheit (-270 degrees Celsius), much of the energy from the Big Bang ...

Plants & Animals Dec 3, 2021

Spiders' motion on a web studied as electrons orbiting a nucleus

The tiny male golden orb-weaving spider faces a considerable challenge when searching for a mate. He is a fraction of the size of the massive female, but must carefully enter her web and approach her without being noticed, ...

General Physics Sep 15, 2021

Have we detected dark energy? Scientists say it's a possibility

A new study, led by researchers at the University of Cambridge and reported in the journal Physical Review D, suggests that some unexplained results from the XENON1T experiment in Italy may have been caused by dark energy, ...

Astronomy May 17, 2021

Dark Energy Spectroscopic Instrument (DESI) starts 5-year survey

A five-year quest to map the universe and unravel the mysteries of "dark energy" is beginning officially today, May 17, at Kitt Peak National Observatory near Tucson, Arizona. To complete its quest, the Dark Energy Spectroscopic ...

page 1 from 7