One theory is that our Sun's formation was initiated by a nearby ... This first-order model of planetary growth in the solar nebula is mainly driven by temperature and density variation, but there are ...

Artist rendition of the protosun and the solar nebula. Oxygen isotopes can be altered by ultraviolet light (gold arrows) in this environment as well. Short-lived radiogenic isotopes of aluminum ...

One theory is that our Sun’s formation was initiated ... This first-order model of planetary growth in the solar nebula is mainly driven by temperature and density variation, but there are ...