... Helio-sheath is deformed because of the ambient flow of the interstellar gas, forming a comet-like tail behind the Sun (see also magnetosphere ). ...
... Pioneer Venus " and most recently " Magellan ", which mapped it by radar; two French balloons were successfully deployed by the Russian "Galley" ("Halley"--no H in Russian) on its way to meet comet Halley, and sent back data about the Venusian atmosphere ...
... The picturc grew more complicated with observations of comets (1943, 1951) which suggested a fast "solar wind" emanating from The Sun's corona at all times. ...
... A spacecraft approaching a stationary object --like a comet approaching the Sun--increases its speed as it approaches, but after it passes (assuming there has been no collision) it loses again all it had gained. ...
... This was probably caused by an object that was tidally disrupted as it passed close to Jupiter (much like Comet SL 9 ) and then impacted on Callisto. ...
... motion makes no difference. 22a. The aberration of starlight, comet tails etc. 22b Elementary notions about aerodynamics ... Aberration of the solar wind, comet tails. 22b Problems of flight near the speed of sound. 24. ...