1. I heard about a new 'spaceship' mode What is it and how do I activate it?
"Spaceship mode" control is activated by pressing , "Aircraft mode" is activated by pressing , and "Normal mode" is activated by pressing . But this is the "old" feature. The new feature will control a "real" spaceship, however it is disabled in the current release. So wait for the next one.
2. I've seen some videos from spaceengine where the camera pans smoothly over planets/stars How is that done?