They are so massive that they remain gravitationally bound to together.
Gravity locks the planets into orbits, keeping them from flying off into space and permitting humans to remain on the face of the planet.
The planets that have the most space between them are mercury and Pluto.
Astronomy is the renaissance that studies the planets. They study the planets and space.
Space astronauts went to the planets to be sure there is no life on planets
To see if Life can survive in space or on planets.
Friction
NASA gets it's space probes back to earth by computer commands. However. most space probes are not designed for re-entry and remain in space to continuously monitor planets and such.
There are four mystery cycles that remain intact to this day, and they are: York, Chester, Wakefield, and N town/cycle of Towneley.
If they aren't in space, then where else can they be?
Gravity locks the planets into orbits, keeping them from flying off into space and permitting humans to remain on the face of the planet.
Mass is a measure of how much matter there is. Therefore your mass will remain constant on Earth, in space or anywhere in the universe. (unless you go on a diet)
Astronomy is all about the things in outer space and planets are in outer space.
The planets that have the most space between them are mercury and Pluto.
in space
Space
of course not!
The majority of Jamaicans remain intact and keep their foreskins.