dark matter

A series of joint NASA and ESA spacewalks four years in the making aims to extend the life of the AMS particle detector. On Nov. 15, astronauts took on a series of tasks ranging in difficulty from zip-tie-cutting to safely launching a piece of equipment into space, all while orbiting the planet at around 5 miles per second. The goal was to fix a component of the Alpha Magnetic Spectrometer, an international particle physics experiment, and to extend its study of cosmic rays, dark matter and antimatter for another decade.

ADMX has ruled out a region where a hypothetical dark matter particle called an axion could have been hiding. The new results are drawn from four times more data than the previous results and will serve as an important guide for other experiments on where to look for this elusive particle.

From Science, Nov. 12, 2019: Three years ago, a team of particle astrophysicists appeared to nix the idea that a faint glow of gamma rays in the heart of our Milky Way galaxy could be emanating from dark matter. But the conclusion that the gamma rays come instead from more ordinary sources may have been too hasty, the team reports in a new study. So the dark matter hypothesis may be alive and well after all. Fermilab scientist Dan Hooper is quoted in this article.

From Forbes, Oct. 30, 2019: Dark matter was proposed in the 1930s and has eluded detection for nearly a century. However, an advanced and high-tech detector called LUX-ZEPLIN has just been installed that might change all of that. Fermilab scientist Don Lincoln gives an overview of the experiment.

The cryostat for Berkeley Lab’s LUX-ZEPLIN experiment — the largest direct-detection dark matter experiment in the U.S. — is successfully moved to its research cavern. This final journey of LZ’s central detector on Oct. 21 to its resting place in a custom-built research cavern required extensive planning and involved two test moves of a “dummy” detector to ensure its safe delivery.

From Washington University’s The Source, Oct. 23, 2019: The Department of Energy has awarded new funding to boost research on dark matter, the mysterious substance that makes up an astounding 85% of the matter in the universe. The Axion Dark Matter eXperiment is one of the fund’s recipients, and a number of Washington University scientists are collaborating on the project.

What keeps galaxies from flying apart? What is the invisible mass that bends light in space? For now, we’re calling it dark matter, and this Oct. 31, laboratories around the world are shining a light on the search for it. Dark Matter Day events include live webcasts with researchers, dark matter scavenger hunts and a Reddit AMA.

In their ongoing search for the mysterious dark matter that makes up 85% of our universe, the particle physics community turns its sights to particles of low mass. The Department of Energy announced that it is providing funding for two Fermilab initiatives to develop experimental designs for experiments that will be highly sensitive to the smallest particles of dark matter. Following the development of the experimental designs, the next phase of funding will be subject to additional reviews and approval.

When he was growing up, Jonathan LeyVa thought he’d follow his passion for race cars and pick a profession in automotive engineering. Instead he’s working on what will become one of the world’s most sensitive searches for dark matter, the invisible substance that accounts for more than 85% of the mass of the universe.

A collaboration led by Fermilab and Stanford University combines their expertise in quantum science and accelerator technologies to build the world’s largest atom interferometer. The instrument will push the boundaries of quantum physics into macroscopic scales, providing a gateway for dark matter searches and tests of gravitational waves.