# What pole is closer to the galactic edge? [duplicate]

Suppose 2 spaceships leave from the earth's north and South Pole going straight up which one will exit the galaxy first (assume they have the same speed and are going in a totally straight line) ? Edge of the galaxy means absence of stars, this question refers to the up-down edge of this spiral galaxy. The question is about the current distance from the earths poles to the edge (top/down) not to the galactic plane, as far as I understand after crossing the plane the nearest pole to the edge will be reversed.

• Given the kind of distances involved, you can treat the Earth as a mathematical point without any loss of accuracy in the answer. Now, do you want "edges" in the spiral plane, or perpendicular to that? – Carl Witthoft Mar 25 '19 at 17:31
• You might like to edit your question to be a bit more precise. How do you define “edge”? Are you including the dark matter halo? Are you ignoring gravitational effects (both boosts and “drag”)? Ie is this about simple straight-line distance, or plotting an escape arc? – Chappo Hasn't Forgotten Monica Mar 25 '19 at 23:47
• Edited to show the question requires a simple straight line, and edge means perpendicular – user426132 Mar 26 '19 at 8:08
• and our solar system is at a large angle to the ecliptic plane (physicsforums.com/threads/…) so to get to the edge, you don't want to exit via the pole but at ~27deg from the equator. – Hobbes Mar 26 '19 at 8:24
• exiting from the pole gives a much longer trajectory than exiting perpendicular to the galactic plane. – Hobbes Mar 26 '19 at 9:59