page 92, par: Mathieu Grousson – Mars Faute de pouvoir être observées directement, les étoiles primitives demeurent une énigme pour les scientifiques. Aussi, le scenario de leur formation repose-t-il sur celui des étoiles connues, où la mystérieuse matière noire tient un faible role. Or, voilà qu’une astrophysicienne américaine émet une hypothèse audacieuse: la matière noire […]
by: Charles Q. Choi These “dark stars,” first born nearly 13 billion years ago, might still exist today. Although they would not shed any visible light, astronomers might detect these invisible giants ? some 400 to 200,000 times wider than our sun and 500 to 1,000 times more massive ? because they should spew gamma […]
by: David Shiga Some physicists speculate that minuscule black holes may have been forged in the very dense soup of matter and radiation that prevailed in the first moments of the universe’s existence. If so, these might account for at least some of the invisible dark matter that pervades the universe.
A BBC article highlights a theory that the first stars may have been powered by dark matter.
BBC Radio Science Unit According to US scientists, the first stars to appear in the Universe may have been powered by dark matter.
by: Maranda Marquit For a long time, scientists have assumed that the very first stars were powered by fusion, in processes similar to what goes on in present day stars. But a new theory is emerging to challenge that view.
page 4, by: Sarah C. Williams The earliest stars in the universe might have been beasts of a different nature than modern stars, a new model suggests. While nuclear reactions between ordinary chemical elements fuel the fire of stars like Earth’s own sun, mysterious dark matter might have powered the first stars.
by: Maggie McKee Theorists believe the first stars formed in cradles of dark matter, condensing from clouds of gas until their cores became so dense that nuclear fusion ignited.
by: Eric Jaffe An intergalactic collision is providing astronomers with a giant payoff: the first direct evidence of the invisible material that theorists say holds galaxies together and accounts for most of the universe’s mass. For some 70 years, cosmologists have agreed that theories of gravity account for observations in Earth’s solar system but fail […]