outer radiation zone
31Helioseismology — is the study of the propagation of pressure waves in the Sun. Unlike seismic waves on earth, solar waves have practically no shear component (s waves). Solar pressure waves are generated by the turbulence in the convection zone, near the surface… …
32Electromagnetic pulse — Ebomb redirects here. For EBOM, see Engineering bill of materials. This article is about the general weapons effect. For other uses, see the more specific topic (for example, Electromagnetic forming) An electromagnetic pulse (sometimes… …
33Helium flash — A helium flash is the runaway fusion of helium in the core of low mass stars of less than about 2.25 solar masses and greater than about 0.5 solar mass, or on the surface of an accreting white dwarf star. They may also occur in the outer layers… …
34Star Fleet Universe — Part of the article series on Star Fleet Universe Games Star Fleet Battles Federation Commander Federation and Empire Prime Directive (role playing game) Star Fleet Battle Force Star Trek: Starfleet Command Star Trek: Starfleet Command II:… …
35Convective overshoot — is a phenomenon of convection carrying material beyond an unstable region of the atmosphere into a stratified, stable region. Overshoot is caused by the momentum of the convecting material, which carries the material beyond the unstable region.… …
36Stellar classification — In astronomy, stellar classification is a classification of stars based on their spectral characteristics. The spectral class of a star is a designated class of a star describing the ionization of its chromosphere, what atomic excitations are… …
37Stellar kinematics — is the study of the movement of stars without needing to understand how they acquired their motion. This differs from stellar dynamics, which takes into account gravitational effects. The motion of a star relative to the Sun can provide useful… …
38Wolf–Rayet star — Hubble Space Telescope image of nebula M1 67 around Wolf–Rayet star WR 124 Wolf–Rayet stars (often referred to as WR stars) are evolved, massive stars (over 20 solar masses initially), which are losing mass rapidly by means of a very strong… …
39Asteroseismology — Different oscillation modes penetrate to different depths inside a star. Asteroseismology (from Greek ἀστήρ, astēr, star ; σεισμός, seismos, earthquake ; and λογία …
40Dredge-up — refers to a period in the evolution of a star where a surface convection zone extends down to the layers where material has undergone nuclear fusion. As a result, the fusion products are mixed into the outer layers of the stellar atmosphere and… …
