![]() Without the sun’s heat and light, life on Earth would not exist. tosphere f-t-sfir 1 : a sphere of light or radiance 2 : the luminous surface layer of the sun or a star photospheric f-t-sfir-ik -sfer- adjective Example Sentences Recent Examples on the Web Despite their great temperatures, dwarf stars can and do harbor water molecules in their own atmospheres their photospheres. The sun has extremely important influences on our planet: It drives weather, ocean currents, seasons, and climate, and makes plant life possible through photosynthesis. These examples are programmatically compiled from various online sources to illustrate current usage of the word 'photosphere.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Encyclopedic Entry Vocabulary The sun is an ordinary star, one of about 100 billion in our galaxy, the Milky Way. Veronique Greenwood, Discover Magazine, 22 Feb. The photosphere is not like the surface of a planet even if you could tolerate the heat, you couldn't stand on it. It is what we see as the visible surface of the Sun. 2021 The outer regions from the photosphere up (the chromosphere and corona) are actually very thin, with pressures generally 1% or less of Earth’s surface atmospheric pressure. The boundary between the Sun's interior and the solar atmosphere is called the photosphere. 2014 Like water boiling in a pot, plasma cells, or granules, carry heat to the sun’s glowing and visible surface, the photosphere. Tom Yulsman, Discover Magazine, 20 Apr. ![]() 2021 The image on the right, acquired at the same time, is a kind of magnetic map of the photosphere. 2022 These Texas-size granules cover nearly the entire photosphere. Matt Hrodey, Discover Magazine, The plume created shocks and pulsations that triggered an eruption, peeling off a chunk of the star’s outer shell called the photosphere. 2013 That material came from the planet itself, which likely passed through the star’s outer photosphere before falling to its demise. Corey S Powell, Discover Magazine, 11 Aug. The photosphere is the portion of the atmosphere where we are able to measure with some confidence the magnetic field that pervades the Sun outer layers. Matt Hrodey, Discover Magazine, 15 June 2023 The photosphere appears black at these wavelengths, because that region is not nearly hot enough to shine brightly in extreme ultraviolet. Light emitted from deeper, denser layers. Recent Examples on the Web Despite their great temperatures, dwarf stars can and do harbor water molecules in their own atmospheres – their photospheres. Description: The photosphere (light sphere) is the layer of a star from which the light that we observe emerges.
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