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Blood test: 10 things you should know

There is nothing wrong with your television set. Do not attempt to adjust the picture. We are controlling transmission. We will control the horizontal, we will control the vertical. We can change the focus to a soft blur or sharpen it to…

How scientists take photos of a black hole

There is nothing wrong with your television set. Do not attempt to adjust the picture. We are controlling transmission. We will control the horizontal, we will control the vertical. We can change the focus to a soft blur or sharpen it to…

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