Taxonomy term

astrophysics

High-powered simulation tracks evolution of universe in detail

The universe burst into existence 14.6 billion years ago, and has been expanding ever since. Of course, humans have only been around to glimpse the most recent fraction of stellar history. Now, a new high-powered computer simulation called Illustris, which traces more than 13 billion years of cosmological evolution, is giving scientists and the public alike an armchair view of how things came to look the way they do.

26 Sep 2014

Super-Earths: Mirrors of our world?

Fifty light-years from Earth, in the constellation Pegasus, burns a yellow star not unlike our sun. The star, called 51 Pegasi, was one of 142 stars under the watchful gaze of Swiss astronomers Michel Mayor and Didier Queloz of the University of Geneva in 1994. From the La Silla Observatory at the southern end of Chile’s vast Atacama Desert, Mayor and Queloz were tracking how these stars move in the sky, hoping to determine whether the stars were alone — or whether any of them might be accompanied by a planet or two.

31 Jul 2009