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sunspot    音标拼音: [s'ʌnsp,ɑt]
n. 太阳的黑点,雀斑

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  • Sunspot - Wikipedia
    High sunspot activity is celebrated by members of the amateur radio community as a harbinger of excellent ionospheric propagation conditions that greatly increase radio range in the HF bands
  • Sunspots - NASA Science
    This video, captured by NASA’s Solar Dynamics Observatory between July 5 to 11, 2017, shows a sunspot moving across the Sun Like freckles on the face of the Sun, sunspots appear to be small features, but size is relative: The dark core of this sunspot is actually larger than Earth
  • Sunspot regions | Solar activity | SpaceWeatherLive. com
    On this page you'll find an overview of all the visible sunspot regions on the Sun together with their properties, images and the chances on solar flares or proton events
  • A monstrous sunspot 15 Earths wide is currently facing Earth: Heres . . .
    A monstrous sunspot region 15-Earths-wide is currently so large it can be seen without binoculars or telescopes But you'll still need proper eye protection
  • What Is a Sunspot? How They Form and Affect Earth
    A sunspot is a temporary dark patch on the surface of the Sun, caused by intense magnetic fields that block heat from reaching the surface Sunspots look dark only by contrast: they’re cooler than their surroundings, but still blisteringly hot at roughly 5,000 to 7,600°F
  • Solar Cycle Progression | NOAA NWS Space Weather Prediction Center
    The observed and predicted Solar Cycle is depicted in Sunspot Number in the top graph and F10 7cm Radio Flux in the bottom graph The predicted progression for the current solar cycle (Cycle 25) is given by the magenta line, with associated uncertainties shown by the shaded regions
  • Sunspots – Definition, Formation, Solar Cycle, and Effects
    Sunspot records reveal periods of unusually low (minima) and high (maxima) solar activity These variations reflect changes in the Sun’s magnetic dynamo and provide insight into long-term solar behavior
  • Biggest Sunspots In Years Turn Toward Earth - Forbes
    The huge sunspot region, which is expected to remain active as it turns to face Earth from May 22 onwards, was also spotted on test images taken by NASA’s Perseverance rover on Mars
  • Real-Time Sun Map – Live Sunspots and Solar Activity
    Track active sunspot regions visually as they evolve on the surface of the Sun The map allows you to switch between different spectral views to observe magnetic activity, coronal structure, and sunspot positions in detail Below the map, you'll find a live list of all currently visible sunspots
  • Sunspot | Solar Flares, Magnetic Fields Sunspots | Britannica
    Sunspot, vortex of gas on the surface of the Sun associated with strong local magnetic activity Spots look dark only by contrast with the surrounding photosphere, which is several thousand degrees hotter





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