Quantity: 1 available
AUDOUIN DOLLFUS - French Physicist/Astronomer/Discoverer. In 1950, it was thought the planet Mercury, because of its small size, had probably lost its atmosphere through the escape of the molecules into space. Dollfus announced that he had detected a very faint atmosphere from polarization measurements carried out at the Pic-du-Midi Observatory in the French Pyrenees. He also investigated the possibility of an atmosphere around the Moon. The rate of thermal dissipation into space of all but the heavier gases (which are cosmically very scarce) from the Moon is so high that an atmosphere cannot be expected.In 1966 Dollfus discovered JANUS, the innermost moon of Saturn, at a time when the rings to which it is very close were seen edge on from Earth (and practically invisible). SIGNED printed picture of him as an Aeronaut in a balloon with ANS on verso identifies the photo as to when Dollfus using 105 balloons ascended to 42,000 feet for several hours to observe Mars and the Moon. Superb collectible.
Title: DECEMBER 31 1959 AVEC LES VOEUX DE CHARLES ET AUDOUIN DOLLFUS SIGNED AUTOGRAPH PHOTO OF DOLLFUS ASCENDING 42,000' USING 105 BALLOONS
Book Condition: Very Good
Size: 12mo - over 6¾" - 7¾" tall
Item: 1.00 Item
Seller ID: 0MV1475
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