![]() ![]() The radiative zone is characterized by the method ofĮnergy transport - radiation. Interface layer or tachocline at the base of the convection zone (from 25% of the distance to the The radiative zone extends outward from the outer edge of the core to the Mysteries of solar astronomy but now appears to be solved by the discovery Problem of the missing neutrinos was one of the great The number of neutrinos we detect is but a fraction of the number we expected. Through the overlying layers of the Sun and, with some effort, can be detected here onĮarth. Produce elementary particles called neutrinos. In this process of fusing hydrogen to form helium, the nuclear reactions To produce a normal helium-4 nucleus with the release of two protons. With the deuterium to produce a helium-3 nucleus and a gamma ray. To produce deuterium, a positron, and a neutrino. Through a three step process called the proton-proton or pp chain. In stars like the Sun the nuclear burning takes place That point the temperature is only half its central value and the density drops to about Of the core (about 25% of the distance to the surface or 175,000 km from the center). The nuclear burning is almost completely shut off beyond the outer edge Both the temperature and the density decrease as one moves outward from theĬenter of the Sun. (27,000,000° F) and the density is about 150 g/cm³ (approximately 10 times the density of gold, 19.3 g/cm³ or lead, 11.3 g/cm³). The temperature at the very center of the Sun is about 15,000,000° C Probability of overcoming the repulsive electrical force between these two positivelyĬharged particles. The individual hydrogen nuclei must collide with enough energy to give a reasonable These reactions are highly sensitive to temperature and density. These reactions release the energy that ultimately leaves the The Sun's core is the central region where nuclear reactions consume Kolb, audio-visual engineer, NASA’s/Marshall Space Flight Center depicts all the regions. Layer (the "tachocline") between the radiative zone and the convection Energy is generated in the core, the innermostīy radiation (mostly gamma-rays and x-rays) through the radiative zone andīy convective fluid flows (boiling motion) through the convection zone, the The solar interior is separated into four Marshall Grazing Incidence X-ray Spectrometer (MaGIXS) Send us feedback about these examples.Chromospheric Lyman-Alpha Spectro Polarimeter (CLASP) These examples are programmatically compiled from various online sources to illustrate current usage of the word 'chromosphere.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. 2012 The telescope, which captured these first images of the Sun’s chromosphere, is operated by the National Solar Observatory. Veronique Greenwood, Discover Magazine, 22 Feb. 2012 Given the lower pressures in the chromosphere, these melting points would be appreciably lower inside the sun. 2021 The situation in the sun’s chromosphere would be orders of magnitude more difficult. 2022 Mysteriously, the corona is much hotter than the photosphere and chromosphere layers immediately below it. 2014 The telescope captured several new pictures of the Sun’s surface back in August, with the fiery chromosphere the main focus of them all. Tom Yulsman, Discover Magazine, 12 Dec. 2017 Many of these structures are visible in the chromosphere and corona, the outermost layers of the Sun's atmosphere. 2021 When viewed during a total solar eclipse, the red rim of the chromosphere is just visible to the naked eye. Recent Examples on the Web Rising within the chromosphere, the relative force of the superheated plasma lessens quickly, but the magnetic fields stay relatively strong. ![]()
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