| Hubble can resolve individual stars and many red protostars as well as aging red giants and supergiants, giving astronomers new insights into the stars' birth and evolution. |
| Drissen's team speculated that the winds blown either by bright, hot stars known as Wolf-Rayet stars or by old stars called red supergiants could have pumped up the gas. |
| Type II supernovae involve massive stars, usually red supergiants, that have exhausted their energy supply. |
| Thorne-Zytkow objects are hybrids of red supergiant and neutron stars that superficially resemble normal red supergiants, such as Betelguese in the constellation Orion. |
| Red supergiants are extremely large stars that weigh in at a minimum of 15 times that of the sun, and they are the largest stars dwelling in our cosmos by volume. |
| Thus, 119 Tauri remains firmly in second place in the league of all known red supergiants and some have even started to refer to this star as the Ruby Star after my lead. |
