Tag: cosmology
A collision of clusters of galaxies causes an “explosion” of 6.5 million light years!
The South African MeerKAT radio telescope is a precursor to the telescope Square Kilometer Array (SKA), a giant radio telescope project consisting of several interferometric networks in metric and centimetric…
Dark Matter ‘Asteroids’ Revealed in Collisions with Stars
The detection of dark matter has proven more difficult than expected, but astroparticle physicists still rely on natural giant detectors, the stars, to compensate for the weakness of terrestrial detectors.…
Reconstruction of the movements of galaxies for 11.5 billion years
Retracing the path traveled by galaxies since the Big Bang is not easy. Because they are not guided simply by expansion. Gravity also comes into play. And researchers have managed…
Biography | Stephen Hawking – Theoretical Physicist and Cosmologist
Stephen William Hawking, born January 8, 1942 in Oxford, is a physicist British theorist and cosmologist well known for his work on black holes, the cosmology quantum and its popular…
Gravitational waves would have made the Big Bang space-time turbulent
Space-time is not a material medium, yet its dynamics resemble that of fluids. Like them, it could have become turbulent, especially at the time of the Big Bang, when it…
Cosmology: what is it?
The term of cosmology refers to the branch of astrophysics which is concerned with the origin, nature, structure and evolution of the universe taken as a whole. Cosmology and general…