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(astronautics) solar sail (a sail-like structure on a spacecraft)
The solar sail is a promising technology for space propulsion.
sundial (simple timekeeping device which makes use of sunlight)
The sundial indicates the hours through the position of the shadow.
(astronomy) solar flare (violent explosion on the Sun’s surface)
A solar flare can cause interference in terrestrial communications.
(soil science) loam (fertile soil consisting of sand, clay and silt)
Loam soil is ideal for the cultivation of various crops.
(electricity) solar panel (array of connected solar cells)
The solar panel converts sunlight into electricity.
sunscreen
I always use sunscreen when I go to the beach.
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