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A Univeristy of Chicago astronomer’s decades-long quest to map millions of stars

    From the University of Chicago, May 21, 2021: Long-time University of Chicago professor of astronomy and astrophysics, Richard Kron created the Sloan Digital Sky Survey which set the stage for the Dark Energy Survey. Although he is retiring this year after 40 years of mapping the universe, he plans on staying on as director of the Dark Energy Survey.

    Antimatter galaxies: if they existed “They could generate the most explosive event after the Big Bang”

      From RECCOM Magazine (Italy), May 17, 2021: Dan Hooper talks about the possible existence of another universe. Physicists believe the Big Bang created equal amounts of matter and antimatter in the early history of the universe – but they can’t explain how antimatter vanished. Perhaps it is not and it resides isolated in some remote regions of our universe.

      A tessellated image of a white cap with a blue dot on the right edge, with shadow surrounding. This image is tessellated many times. A single cap, center right, is different: It has a white dot with a white concentric circle around it on top. No blue.

      Dark Energy Spectroscopic Instrument starts 5-year survey

      DESI will capture and study the light from tens of millions of galaxies and other distant objects to better understand our universe and the properties of dark energy. The formal start of DESI’s five-year survey follows a four-month trial run of its custom instrumentation that captured 4-million spectra of galaxies — more than the combined output of all previous spectroscopic surveys. Fermilab has contributed multiple components to the international collaboration led by Berkeley Lab.