cosmology

Berkeley Lab’s Dark Energy Spectroscopic Instrument aimed its robotic array of 5,000 fiber-optic “eyes” at the night sky Oct. 22 to capture the first images showing its unique view of galaxy light. It was the first test DESI with its nearly complete complement of components. Fermilab contributed key elements to DESI, including the corrector barrel, hexapod, cage and CCDs. Fermilab also provided the online databases used for data acquisition and the software for the instrument’s robotic positioners.

Ground-based experiments designed to study the cosmic microwave background have gotten larger and more sophisticated over time. Now, nearly 200 scientists who have up until this point worked on different competing CMB experiments have joined forces to propose a fourth-generation experiment, the largest ground-based one yet, called CMB-S4.

Early Tuesday morning, three physicists—James Peebles, Michel Mayor and Didier Queloz—were rewarded for decades seminal contributions to advancing science with a phone call from Stockholm. This year’s Nobel Prize in Physics was awarded “for contributions to our understanding of the evolution of the universe and Earth’s place in the cosmos.”

When LIGO and Virgo detected the echoes that likely came from a collision between a black hole and a neutron star, dozens of physicists began a hunt for the signal’s electromagnetic counterpart.

The Dark Energy Survey has delivered dark energy constraints combining information from four of its primary cosmological probes for the first time, an approach that may help design other experiments into cosmic acceleration.

The Event Horizon Telescope collaboration, which announced the first image of a supermassive black hole in April, has won the 2020 Breakthrough Prize in Fundamental Physics. Fermilab scientists Bradford Benson and Alexandra Rahlin are among a large group of scientists who share the prize for their contributions to the achievement.

From Popular Science, July 29, 2019: “Death by Dark Matter” is not the name of your new favorite metal band; it’s the literal title of a new study by a trio of American of physicists. Fermilab science Dan Hooper is quoted in this article on their paper, which explores what the hypothetical consequences might be on the human population if a certain candidate of dark matter turned out to be true.

Nord and a University of Chicago scientist will apply the tools of artificial intelligence to accelerate discovery by automating the design and execution of cosmic experiments. The grant is part of an initiative to provide seed funding for collaborative projects in AI and quantum science between the university, Fermilab and Argonne National Laboratory.

A new study shows that light dark matter is 1000 times less likely to bump into regular matter than previous analyses allowed.

Few numbers have gotten under astronomers’ skin like the Hubble constant. In fact, experts have debated the value of this single parameter for 90 years, and if astronomers can measure its value with great precision, they’ll be one step closer to solving some of the other grand astronomical mysteries of our age. There’s just one problem: The measurements they’ve taken don’t agree. The discrepancy makes scientists question whether something is amiss in our understanding of the universe.