She's gonna soon find out that her "planets" can "attract" his "rocket" very well.
They already did, given the graphic on the small floating screen. Although based on the thought bubble their boobs seems to be a thought-relaying organs that bypasses the need ot speech?
If he does manage to attempt re-entry, he needs to be careful. Should he become lodged between both sources of gravity, the heat caused by that much friction may force him to eject from the cockpit prematurely.
The thought bubble shows that they're trying to do the prime number-based mathematical communication via gravitational waves as the communication medium. Not sure how they expect him to sense those waves, though.