... objects might have been faint comets , and later comets have been observed that ... comets, 1862 III with a period of 120 years and aphelion at 47.6 a.u., and 1889 II ... comets to suggest a trans-Plutonian planet at 77 a.u. Four years later, H. H ...
... NASA Historical Space Archive . Return to the Comets . Views of the Solar System Copyright ї 1997 by Calvin J. Hamilton . All rights reserved.. ...
... Comet Halley Flyby - 4,000 kg - (December 15, 1984) Vega 1 flew past Venus on June ... Comet Halley Probe - 4,000 kg - (December 21, 1984) Vega 2 flew past Venus on June ...
... The orbit of Comet Halley, on the other hand, has e quite close to 1. The collection of all points for . ... Comets in general have and eccentricity e close to 1, suggesting they have come from the very distant fringes of the solar ...
... lines enclosed in a bullet shaped cavity, which on the night side continues as a long cylinder, like the tail of a comet ... it monitored the solar wind, after which it was detailed to explore the far tail; still later it was sent to encounter a comet ...
... lines enclosed in a bullet shaped cavity, which on the night side continues as a long cylinder, like the tail of a comet ... it monitored the solar wind, after which it was detailed to explore the far tail; still later it was sent to encounter a comet ...
... A possible explanation was that some time in the past (perhaps long ago) a comet had crashed into the Moon, and comets contain considerable amounts of water ice. ...