Very high


Age of the Universe

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From the Outer of the Universe to the Inner of the Atom.

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El CERN y los detectores de partículas

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Freezing cells in liquid nitrogen: cryopreservation

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Sunspots! Let us introduce ourselves

5
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Venus

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Η Μπαρούτη

5
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Το σαπούνι

5
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What color would plants have on another planet?

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Moon phases

5
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