Astronomie
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Observation of the International Space Station The International Space Station can easily be spotted with the naked eye. Because of its size (110m x 100m x 30m) it reflects very much sunlight. The best time to observe the ISS is when it is night time at your location, but the Space Station is sunlit. Such a situation occurs often in the morning before sunrise or in the evening after sunset. Visible passes
ISS observation
Armillary Sphere
Humboldt State University ® Department of Chemistry Richard A. Paselk The Armillary Sphere An armillary sphere is basically a skeletal celestial sphere with a model of the Earth or, later, of the Sun placed in the center. It is useful as a teaching tool and as an analog computer for solving various astronomical problems to a crude degree of accuracy.
sun
simulations
Cours
À la une Nos dernières émissions Planck : l'univers était presque parfait Univers "Planck révèle un univers presque parfait". C'est par ces mots, le 21 mars 2013, que l'agence spatiale européenne a fait connaître au monde les résultats de son satellite de...
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