For almost three decades since Mariner 2 flew by the planet in
December 1962, Venus has been the subject of intense investigation
by both the Soviet and American space programs. Since the intrinsic
magnetic field of Venus is exceedingly weak, if it exists at all,
we expect many phenomena of the upper atmosphere and ionosphere of
Venus to differ from their terrestrial counterparts. While flybys
and landings of the many Venus missions provided useful data on
these phenomena, orbital missions were needed for their detailed
investigation. Such orbital missions were provided by the Soviet
program with Veneras 9 and 10 in October 1975 and by the United
States with the Pioneer Venus Orbiter in December 1978. Originally
designed for a prime mission of only 243 days, the Pioneer Venus
Orbiter is still functioning over a decade later, providing data
nearly - hours a day through one of the most active solar cycles to
date. We expect these transmis sions to continue until September
1992 when gravitation perturbations will lower the periapsis of the
PVO orbit so that the spacecraft will be lost to the atmosphere.
The Venera 9 and 10 and the Pioneer Venus observations have led to
an explosion of knowledge about the upper atmosphere and ionosphere
of Venus and their interaction with the solar wind. The
availability of data over a full solar cycle has."
General
Is the information for this product incomplete, wrong or inappropriate?
Let us know about it.
Does this product have an incorrect or missing image?
Send us a new image.
Is this product missing categories?
Add more categories.
Review This Product
No reviews yet - be the first to create one!
Welcome to Loot.co.za!
Sign in / Register |Wishlists & Gift Vouchers |Help | Advanced search
