the gold in the universe, as well as about half of all the other elements heavier than iron.

"Most of the time in science you are working to gradually advance an established subject," Kasen said. "It is rare to be around for the birth of an entirely new field of astrophysics. I think we are all very lucky to have had the chance to play a role."

Kasen's work is supported by the U.S. Department of Energy, and simulations were made possible by resources from the National Energy Research Scientific Computing Center (NERSC). Kasen's and Quataert's work is supported by the Gordon and Betty Moore Foundation. Quataert is also supported by the Simons Foundation.

###BIOS

CAW blames Nortel bondholders for failed mediation efforts

A man walks past a company sign at a Nortel Networks office tower in Toronto on Feb. 25, 2009. (Nathan Denette / THE CANADIAN PRESS)

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The Canadian Press
Published Friday, January 25, 2013 9:25AM EST
Last Updated Friday, January 25, 2013 3:26PM EST

The complex legal battle over $9 billion in residual assets of former technology giant Nortel Networks underlines the inadequacy of Canada's bankruptcy laws, says the head of the Canadian Auto Workers.

Union president Ken Lewenza says Ottawa needs to intervene to ensure that former workers, disabled employees and pensioners at the now-defunct equipment maker can get their fair share of the assets, which are being claimed by more than 100 parties including bondholders, trade creditors and governments.

"It's a case that the government should