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  1. Sunspots are areas that appear dark on the surface of the Sun. They appear dark because they are cooler than other parts of the Sun’s surface. The temperature of a sunspot is still very hot though—around 6,500 degrees Fahrenheit!
    spaceplace.nasa.gov/solar-activity/en/
    To most visible-light telescopes, sunspots appear black. But why do they look this way, and are they really black? It turns out that sunspots aren't actually black. Rather, the darkness is just an optical illusion created by the contrasting heat of sunspots and their surroundings.
    www.livescience.com/why-are-sunspots-black
    They appear when energy from deep inside the sun is being blocked or prevented from reaching the surface. It's being blocked by a strong magnetic field. So, a sunspot is where a magnetic field gets so strong that it stops energy from inside the sun escaping to the surface.
    www.dw.com/en/why-theres-a-little-black-spot-on-t…
  2. Gigantic 'hole' in the sun wider than 60 Earths is …

    Dec 5, 2023 · The giant dark patch, known as a coronal hole, took shape near the sun's equator on Dec. 2 and reached its maximum width of around 497,000 miles (800,000 kilometers) within 24 hours,...

  3. How Melanoma vs. Sunspots Look on Skin - Verywell …

    Aug 16, 2023 · By contrast, sunspots, also known as age spots or liver spots, are typically harmless. They appear as light brown to black lesions that are flat and oval in size. Sunspots usually develop on areas of the skin that are …

  4. Sunspot - Wikipedia

  5. Sunspots: What are they, and why do they occur? | Space

    Apr 13, 2023 · Sunspots are dark, planet-size regions of strong magnetic fields on the surface of the sun. They can spawn eruptive disturbances such as solar flares and coronal mass ejections (CMEs). These...

  6. A massive sunspot is currently visible to the unaided …

    May 30, 2023 · The sunspot AR3310 is a massive dark patch on the sun that is about four times the size of Earth, and it is caused by especially strong and intertwined magnetic fields. In the case of sunspots...

  7. Sunspots: Symptoms, Causes, Diagnosis, and …

    Apr 17, 2024 · Sunspots are dark spots on the skin that appear after you experience too much ultraviolet (UV) light exposure. Also called age spots, liver spots, or solar lentigines, sunspots are a type of...

  8. Sunspots and Solar Flares | NASA Space Place – NASA Science for …

  9. Sunspots - NASA Science

  10. Sunspots on Skin: What Causes Them and What You …

    Jun 13, 2024 · Sunspots are dark spots on the skin that result from years of sun exposure. Also known as age spots, hyperpigmentation, liver spots, or solar lentigines, these discolored patches usually appear in middle age, although …

  11. Sunspots/Solar Cycle - NOAA / NWS Space Weather …

    Sunspots are dark areas that become apparent at the Sun’s photosphere as a result of intense magnetic flux pushing up from further within the solar interior. Areas along this magnetic flux in the upper photosphere and chromosphere …