cosmology

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…


Dark matters

ALL THAT WE KNOW of the universe we get from observing photons, Natarajan pointed out. But dark matter, which makes up 90 percent of the total mass in the universe, is called dark because it…


Keck spots a galaxy from the toddler universe

An international team of scientists has detected and confirmed the faintest early-Universe galaxy ever using the W. M. Keck Observatory on the summit on Maunakea, Hawaii. In addition to using the world’s most powerful telescope,…


Brush up on your theories of everything

Ever since the dawn of civilization,” Stephen Hawking wrote in his international bestseller A Brief History of Time, “people have not been content to see events as unconnected and inexplicable. They have craved an understanding…


Mathematics as basics

I found this presentation from Max Tegmark, explaining the background of his theories on a mathematical universe. His book about this subject is worth while, as it’s not only scientific but philosophical as well. Beside…


Older, Oldest, Oldestest, Oldestetsest

A team of Caltech researchers that has spent years searching for the earliest objects in the universe now reports the detection of what may be the most distant galaxy ever found. In an article published…