The kinematics of small Milky Way satellites should differ depending on whether dark matter is warm or cold; current data constrain the mass of warm dark matter particles to >5.8 keV at 95% confidence.
Astronomers using China's FAST radio telescope have discovered a compact hydrogen cloud devoid of visible stars. Containing nearly 500,000 solar masses of neutral hydrogen, it represents one of the strongest candidates yet for an isolated dark galaxy.
An astronomer from the University of Missouri is leading 130 researchers across 62 institutions, including NASA, Caltech, Princeton, and Harvard. The ambitious mission aims to capture an unprecedented view of the early universe.
Astronomers have solved the mystery behind the musical treble clef-shaped radio formation located beyond the Milky Way's Zone of Avoidance. New research confirms that this peculiar cosmic structure is a rare radio phoenix.
The immense mass of the distant El Gordo supercluster challenges cosmological growth models. Researchers suggest this rapid formation could stem from a two-state self-interacting dark matter mechanism.
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