Snipperts from the Astronomical Press
Venus Lends a Helping Hand: En route to Saturn, the Cassini spacecraft flew less than 400 miles above Venus today gaining a boost in speed from that planet's gravity. This story includes a tutorial on "gravity assist" maneuvers and how they are used to propel spacecraft to the outer planets.
FULL STORY at: http://science.nasa.gov/newhome/headlines/ast24jun99_1.htm
Linda Porter
Code SD23
linda.porter@msfc.nasa.gov
Science Systems Department
http://science.nasa.gov/
NASA/Marshall Space Flight Center
Huntsville AL 35812
(256) 544-7588
(256) 544-7128 (fax)