(PhysOrg.com) --Almost 400,000 years after the universe was created in the big bang, matter cooled sufficiently for neutral atoms to form, thereby allowing the pervasive light to propagate almost completely unhindered.
Astronomy
Apr 12, 2010
0
2
After the Big Bang, the universe, glowing brightly, was opaque and so hot that atoms could not form. Eventually cooling down to about minus 454 degrees Fahrenheit (-270 degrees Celsius), much of the energy from the Big Bang ...
Astronomy
Jan 12, 2022
0
317
The expansion of the Universe has occupied the minds of astronomers and astrophysicists for decades. Among the cosmological models that have been suggested over the years, Lambda cold dark matter (LCDM) models are the simplest ...
General Physics
Mar 26, 2020
0
286
Neutrinos, also known as 'ghost particles' because they barely interact with other particles or their surroundings, are massless particles according to the standard model of particle physics. However, there is a lot of evidence ...
General Physics
Jul 22, 2014
10
0
(PhysOrg.com) -- After years of successful concealment, the most primitive stars outside our Milky Way galaxy have finally been unmasked. New observations using ESO's Very Large Telescope have been used to solve an important ...
Astronomy
Feb 17, 2010
0
0
A tiny fraction of a second following the big bang, the universe allegedly experienced the most inflationary period it has ever known.
General Physics
May 15, 2009
7
0
By applying a machine-learning technique, a neural network method, to gigantic amounts of simulation data about the formation of cosmic structures in the universe, a team of researchers has developed a very fast and highly ...
Astronomy
Jul 21, 2022
0
104
The unveiling this summer of the most accurate cosmic picture ever taken of the distribution of dark matter has left astrophysicists feeling both delighted and frustrated.
Astronomy
Oct 31, 2017
3
26
(Phys.org) —An exploding star observed in 1604 by the German astronomer Johannes Kepler held a greater fraction of heavy elements than the sun, according to an analysis of X-ray observations from the Japan-led Suzaku satellite. ...
Astronomy
Apr 8, 2013
4
0
"Cosmologists are often wrong but never in doubt," Russian physicist Lev Landau once said. In the early days, astronomers began by observing and modelling stars in different stages of evolution and comparing their findings ...
Astronomy
Feb 28, 2018
7
98
