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Sep 14, 2026
ESA’s FLEX mission reveals the secret glow of plants
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00:06:30
Plants may look still and silent, but every leaf is constantly responding to its environment.As plants photosynthesise, they emit an incredibly faint glow called fluorescence. Invisible to our eyes, this signal can reveal how plants are using sunlight and how they respond to heat, drought, pests and other environmental stresses.ESA’s Fluorescence Explorer, or FLEX, will detect this faint signal from space. Using its highly sensitive FLORIS instrument, FLEX will map plant
00:06:30
Plants may look still and silent, but every leaf is constantly responding to its environment.As plants photosynthesise, they emit an incredibly faint glow called fluorescence. Invisible to our eyes, this signal can reveal how plants are using sunlight and how they respond to heat, drought, pests and other environmental stresses.ESA’s Fluorescence Explorer, or FLEX, will detect this faint signal from space. Using its highly sensitive FLORIS instrument, FLEX will map plant
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