Comment by onion2k
6 hours ago
I've always assumed that the reason there aren't many launch sites in Europe because the booster stage falls back to Earth, and generally you want that to be over the sea. People get cross if rockets fall on their houses. If you're using the Earth's axial rotation as a helper that means launching heading east, and in Europe east is pretty much always over land. That's why most spaceports are either by an ocean (USA, Japan) or over a huge area of land no one lives in (Russia).
Not really, the actual issue is delta V, launching near the equator requires less fuel because you are getting all the benefit from Earth's rotation. Mass is almost everything for rocket launches.
Northern launches are done sometimes for high inclination orbits since they reduce the need to maneuver from an equatorial orbit.