Thanks to the Sun, we are able to enjoy sea of sunlight warmth and beauty during the day.
But how many people know that the little light emitted or reflected at night from the distant objects in the far outer space is the main way for the scientists to study the behaviours/properties of these objects, being the stars or even the planets within our solar system? Cannot imagine how a few pixels of light can reveal so much, but such were the accumulated wonderful and hard works done by many scientists behind the scene for the last few hundred years!
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