Keith Cooper is a freelance science journalist and editor in the United Kingdom, and has a degree in physics and astrophysics from the University of Manchester.
The Draco dwarf is a faint, star-poor but dark-matter rich galaxy. Here we see Hubble zooming in on some of its stars.is concentrated within the core of a nearby dwarf galaxy, a finding that rushes to the rescue of the Standard Model of. This model basically predicts dark matter to be"cold," but recent findings have started to hint at the substance being"warm." These new observations, however, are on the Standard Model's side.
Dwarf galaxies are the best place to study dark matter because, proportionally, they have the highest abundance of dark matter of any galaxy type. The Draco dwarf galaxy, which was chosen for this study, orbits our. In Hubble's archives, there is data describing the motions of stars in the Draco dwarf spanning 18 years, between 2004 and 2022.
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