| This is a valid point of view for external observers, but not for infalling observers. |
| Some of the infalling matter becomes re-directed out of the accretion disk as dual, oppositely directed jets. |
| This did not strictly contradict Oppenheimer's results, but extended them to include the point of view of infalling observers. |
| Langer and his colleagues tracked the infalling gas by measuring the velocity of a trace component, dicarbon monosulfide, which emits radio waves. |
