Why Red Dwarfs Have Fewer Chances for Photosynthesis ⚡ экспресс
Scientists have figured out how much stellar energy is actually available for photosynthesis on planets. It turns out that around Sun-like stars, the potential for oxygen production is about five times higher than around cold red dwarfs. For such dim stars, light is like watered-down fuel, and plants would have to capture bluer rays. What would life look like under a red sun?
Oxygenic photosynthesis requires splitting water. It's kind of like a water wheel: to make it spin, you need a strong current. Light acts as the current, and light particles are the streams. For red dwarfs, the most common stars, the light is "cool" and weak — the streams barely move the wheel.
But even on Earth, with its bright Sun, the wheel uses only a drop of the available energy. The theoretical maximum oxygen output is thousands of times higher than what's actually produced. So complex life might be hiding unnoticed — and we should search for it around stars similar to ours.
🎯 The upper theoretical limit for oxygen production on Earth is thousands of times higher than what plants actually produce.