Don't worry, there's no need to be concerned of encountering a black hole anytime soon, but here's what would happen to your ...

Scientists call that speed the escape velocity. A rocket needs to go that fast so that the momentum propelling it away from Earth is stronger than the force of gravity pulling it back. Any slower ...

But to travel from low-Earth orbit (LEO) to farther orbits—or even the Moon—requires a different kind of ion thruster capable ...

the radioactive products are emitted with a velocity far exceeding the escape velocity of the Earth and, providing the engine was directed to thrust perpendicular to the radial vector connecting the ...