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From: "F. Russell" <fr@random.info>
Newsgroups: comp.graphics.apps.gnuplot
Subject: Are Space Flights Always Limited to the Solar System Plane?
Date: 13 Jul 2017 16:59:17 GMT
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Xref: csiph.com comp.graphics.apps.gnuplot:3690

A spacecraft launched from earth will have a velocity
component equal to the earth's orbital velocity around
the sun (30 km/sec).

To place this spacecraft in an orbit perpendicular to the
plane of the solar system would require that this velocity
component be overcome.  This would require a LOT of fuel and
it seems that for this reason such a perpendicular orbit would
be unfeasible.

Is this correct?  Are all spacecraft then limited practically
to orbits that are within the plane of the solar system?

A separate question would be the reason why an orbit perpendicular
to the solar system plane would be useful.