sun spots
Star's dark patches
Sunspots are dark patches on the sun's surface, cooler regions caused by magnetic activity.
They appear and disappear in cycles of roughly eleven years, and their fluctuations can affect radio communications and produce auroras on Earth.
Usually spelled as one word: sunspot activity peaked last month.
Light-dimming optical attachment
- spectroscopyStudy of light-matter interaction
- coronaStar's outermost atmosphere
- chromosphereStellar atmospheric zone
- plageSeaside bathing area
eclipse · white light · Galileo · transit
Magnetic eruption from sunspots
- photosphereStar's light-emitting surface
- umbraComplete shadow region
- penumbraRegion of partial illumination
- magnetic fieldForce zone around magnets
plasma · solar wind · solar activity · geomagnetic storm · solar radiation · granulation
Pigmented skin spots
- hyperpigmentationLocalized skin darkening condition
- melasmaPatchy facial skin darkening
- lentiginesPigmented skin lesions
- pigmentationNatural tissue coloring
melanin · moles · birthmarks · complexion · dermatology · sunscreen · UV exposure · sunburn
solar filter
Light-dimming optical attachment
- spectroscopyStudy of light-matter interaction
- coronaStar's outermost atmosphere
- chromosphereStellar atmospheric zone
plage · eclipse · white light · Galileo · transit
solar flare
Magnetic eruption from sunspots
- photosphereStar's light-emitting surface
- umbraComplete shadow region
- penumbraRegion of partial illumination
magnetic field · plasma · solar wind · solar activity · geomagnetic storm · solar radiation · granulation
freckles
Pigmented skin spots
- hyperpigmentationLocalized skin darkening condition
- melasmaPatchy facial skin darkening
- lentiginesPigmented skin lesions
pigmentation · melanin · moles · birthmarks · complexion · dermatology · sunscreen · UV exposure · sunburn · tanning
- aging signswrinkles, fine lines, wrinkled skin, gray hair, frown lines
- facial featuresnose, chin, freckles, mole, brow
- skin problemswrinkles, eczema, acne, lesions, blackheads
- pigmentationmelanin, eumelanin, melanocytes, skin color, pigment
- skin discolorationvitiligo, melasma, hyperpigmentation, albinism, depigmentation
- Visual Clutterglare, clutter, blur, smudges, fingerprints