All celestial bodies operate in their own Resonating Electromagnetic Fields. They operate in a vortex. This is true of atoms, moons, planets, comets, suns, galaxies and supergalaxies. The shape of galaxies (spiral nebulae), as observed through telescopes, is the perfect shape of a Resonating Electromagnetic Field (RMF). This shape is visible throughout the infinite cosmos from Microcosm to Macrocosm, and the form is universal. Another example is the form of Saturn and its rings. Celestial bodies take the shape of their respective RMF, that's why they all appear very similar.
And that is the best way to build a spacecraft. It would take the shape of its RMF, an artificial and controlled RMF. It would contain its own atmosphere and electromagnetic field around it like a celestial body, thus repelling any dangerous objects such as meteors. The spacecraft could also travel under water because the RMF would prevent water touching it.
Look at spiral nebulae and imagine the construction of our Milky Way Galaxy, and behold the universal examples of what scientists can discover to be the perfect shape for a spaceship. TRUE space travel will begin when our craft operate in their own artificial RMF. After all, planet Earth is nothing but an enormous spaceship with a natural RMF. We will then be able to reach the speed of light!