XRISM observations of Cassiopeia A reveal abundant chlorine and potassium, showing supernovae can forge these life-linked elements and clarifying their cosmic origins. (Nanowerk News) "Why are we here ...

Stars are thought to form within enormous filaments of molecular gas. Regions where one or more of these filaments meet, known as hubs, are where massive stars form. These massive stars, located ...

This cartoon courtesy of Anthony Piro illustrates three possibilities for the origin of the mysterious hydrogen emissions from the Type IA supernova called ASASSN-18tb that were observed by the ...