Solar system - other


Παρατήρηση και καταγραφή αποκρύψεων αστέρων από αστεροειδείς

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Calculating the speed of light

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Average: 5 (2 votes)
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Venus phases

5
Average: 5 (1 vote)
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Moon phases

5
Average: 5 (1 vote)
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Planetary Calculator

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Average: 3.7 (3 votes)
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Planetary Calculator - choosing the scale

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Planetary Calculator Constellations

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Planetary Calculator Phase3

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Sunspots! Let us introduce ourselves…

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Average: 4.7 (3 votes)
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Calculadora planetária

5
Average: 5 (3 votes)
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