cosmology

From soup to stars

Thanks to a new development in nuclear physics theory, scientists exploring expanding fireballs that mimic the early universe have new signs to look for as they map out the transition from primordial plasma to matter…


It came from another dimension

The article mentioned in this post can be found in the August 2014 edition of Scientific American, The Black Hole at the Beginning of Time by Niayesh Afshordi, Robert B. Mann and Razieh Pouhasan. If…


Young geezers in the sky

ESA’s Planck satellite has revealed that the first stars in the Universe started forming later than previous observations of the Cosmic Microwave Background indicated. This new analysis also shows that these stars were the only…


Finetuning the Hubble Constant

Astronomers think the universe might be expanding faster than expected. If true, it could reveal an extra wrinkle in our understanding of the universe, says Nobel Laureate Adam Riess of the Space Telescope Science Institute…


Does dark matter exist? And how about gravity?

Erik Peter Verlinde (born 21 January 1962) is a Dutch theoretical physicist and string theorist. He is the identical twin brother of physicist Herman Verlinde. The Verlinde formula, which is important in conformal field theory…


Bouncing Bang

Cosmology has a problem. The problem begins, as the universe does, with the big bang. The standard cosmology imagines the universe’s first instant as a singularity: that is, a single point, taking up no space…


Eye of Horus in the distance

Light from a distant galaxy can be strongly bent by the gravitational influence of a foreground galaxy. That effect is called strong gravitational lensing. Normally a single galaxy is lensed at a time. The same…