Sentences with phrase «oxygen in the supernova»

Not exact matches

Co-author Daniel Kasen from UC Berkeley and Lawrence Berkeley National Lab created models of the supernova that explained the data as the explosion of a star only a few times the size of the sun and rich in carbon and oxygen.

«The oxygen we breathe, the iron in our blood, the carbon in plants, the silicon in the sand — all the matter that makes up you and the Earth is made and distributed by supernovae,» Janka says.

And physicists are using computer modeling to close in on the neutrino's critical role in triggering the kind of supernovae that distribute essential elements like oxygen and nitrogen.

The oxygen - rich supernova dust grain has a different composition than one reported earlier this year in Nature by cosmochemist Larry Nittler of the Carnegie Institution in Washington, D.C. «That's exciting,» says Nittler.

The amount of oxygen in a galaxy is determined primarily by three factors: how much oxygen comes from large stars that end their lives violently in supernova explosions — a ubiquitous phenomenon in the early Universe, when the rate of stellar births was dramatically higher than the rate in the Universe today; how much of that oxygen gets ejected from the galaxy by so - called «super winds,» which propel oxygen and other interstellar gases out of galaxies at hundreds of thousands of miles per hour; and how much pristine gas enters the galaxy from the intergalactic medium, which doesn't contain much oxygen.