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Stellar Wind (other)
Stellar wind is the flow of particles from the atmosphere of stars. Stellar wind may also refer to: *Stellar Wind, the code name for certain United States government information collection activities *Solar wind, stellar winds emitted by Earth's sun *Stellar Wind (horse), a Thoroughbred racehorse See also * Solar wind (other) {{disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stellar Wind
A stellar wind is a flow of gas ejected from the upper atmosphere of a star. It is distinguished from the bipolar outflows characteristic of young stars by being less collimated, although stellar winds are not generally spherically symmetric. Different types of stars have different types of stellar winds. Post- main-sequence stars nearing the ends of their lives often eject large quantities of mass in massive ( \scriptstyle \dot > 10^ solar masses per year), slow (v = 10 km/s) winds. These include red giants and supergiants, and asymptotic giant branch stars. These winds are understood to be driven by radiation pressure on dust condensing in the upper atmosphere of the stars. Young T Tauri stars often have very powerful stellar winds. Massive stars of types O and B have stellar winds with lower mass loss rates (\scriptstyle \dot 1–2000 km/s). Such winds are driven by radiation pressure on the resonance absorption lines of heavy elements such as carbo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solar Wind
The solar wind is a stream of charged particles released from the upper atmosphere of the Sun, called the corona. This plasma mostly consists of electrons, protons and alpha particles with kinetic energy between . The composition of the solar wind plasma also includes a mixture of materials found in the solar plasma: trace amounts of heavy ions and atomic nuclei such as C, N, O, Ne, Mg, Si, S, and Fe. There are also rarer traces of some other nuclei and isotopes such as P, Ti, Cr, 54Fe and 56Fe, and 58Ni, 60Ni, and 62Ni. Superposed with the solar-wind plasma is the interplanetary magnetic field. The solar wind varies in density, temperature and speed over time and over solar latitude and longitude. Its particles can escape the Sun's gravity because of their high energy resulting from the high temperature of the corona, which in turn is a result of the coronal magnetic field. The boundary separating the corona from the solar wind is called the Alfvén surface. At a dist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stellar Wind (horse)
Stellar Wind (foaled February 13, 2012) is an American Thoroughbred racehorse, known for her Eclipse Award winning three-year-old season, and later for her rivalry with the champion mare Beholder. Bred in Virginia, she raced in Maryland as a juvenile, winning one minor race from two starts. As a three-year-old, racing mainly in California, she improved to become arguably the best filly of her generation (in North America). In the spring of 2015, she won the Santa Ysabel Stakes and the Santa Anita Oaks before finishing a troubled fourth in the Kentucky Oaks. On her return to California, she recorded further victories in the Summertime Oaks and the Torrey Pines Stakes, and then ended her season by finishing a strong second in the Breeders' Cup Distaff. She was voted American Champion Three-Year-Old Filly of 2015. At age four, Stellar Wind won two of her starts, beating Beholder in both the Clement L. Hirsch and Zenyatta while finishing second to her in the Vanity Mile and fourth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
