Most sources of pop culture & even engineering ones have failed to provide the key problems of space traveling. For example, dv ain't that hard as aerodynamics of Space. For 1st glance, it looks ridiculous == Space is Vacuum. Mostly, yes.. but Space has a lot of dust & gaseous clouds. Just one gram of material at 100 km/s equals to 5,000,000 Joules, it's roughly worthy to 1 kg of TNT & actually, far more lethal (detonation speed for tnt is only several km). Second trouble gets to be magnetic fields == at the least, eddy currents shall make a lot of noise onto spaceship sensors; more worse issue will be full blackout for unknown time; at worst scenario, sensors get fried entirely.