Tag Archive for 'Gravitational-wave background'

Gaztañaga proposes a new dark matter mechanism in which relic black holes originate from a pre-Big-Bounce collapse phase.

Black Holes from Before Big Bang Could Still Exist Today as ‘Cosmic Fossils’

Apr 20, 2026 by News Staff

New research by Professor Enrique Gaztañaga from the University of Portsmouth and the Institute of Space Sciences in Barcelona suggests some black holes...

Schematic of the expansion of the Universe from the Big Bang to the present day. Image credit: NASA / EFBrazil.

Astrophysicists Propose New Method to Measure Hubble Constant

Feb 25, 2026 by Enrico de Lazaro

Astrophysicists from the University of Illinois and the University of Chicago have developed an innovative method to measure the Hubble constant —...