Οι δακτύλιοι του Κρόνου σε άλλη κλίμακα

It’s difficult to get a sense of scale when viewing Saturn’s rings, but the Cassini Division (seen here between the bright B ring and dimmer A ring) is almost as wide as the planet Mercury. (See PIA11142 for a labeled panorama of features in the rings.) The 2,980-mile-wide (4,800-kilometer-wide) division in Saturn’s rings is thought…

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E-sail technology…. ούριος ηλιακός άνεμος στα πανιά μας

Heliopause Electrostatic Rapid Transit System (HERTS) Bruce Wiegmann NASA Marshall Space Flight Center Description Our Electric Sail (E-sail) propulsion team is excited to propose to the 2015 NAIC Phase II solicitation. Our international team includes: the inventor and patent holder of the E-Sail propulsion system (Dr. Pekka Janhunen of the Finnish Meteorological Institute (FMI), the…

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