I work for myself <a href=" http://siulodarba.com/intermediate-bipc-model-papers ">abnormal psychology paper topics</a> "All evidence is consistent with the theoretical expectation that the progenitor of this Type Ib supernova is a Wolf-Rayet star," says Cao. "Our next step is to check for the disappearance of this progenitor star after the supernova fades away. We expect that it will have been destroyed in the supernova explosion."