The simplest and best answer to that question is:
-- Without gravity, there would be no orbits.
-- Once you completely understand gravity, you can figure out everything there is
to know about orbits, because it all comes from the behavior of gravity.
There is gravity in space. Gravity is what makes orbits possible.
"Gravity" is responsible for the existence of planetary orbits, and for their shapes and periods. It's also the reason for the spherical shapes of the planets, and for the existence of atmospheres, in the case of those planets that have any.
gravity is something that can affect the planets.
"Gravity" is the cause of orbital motion. No gravity . . . no orbits, and things just sail away in straight lines. Without gravity, there's no such thing as a satellite of anything.
Gravity and dark matter.
The simplest and best answer to that question is: -- Without gravity, there would be no orbits. -- Once you completely understand gravity, you can figure out everything there is to know about orbits, because it all comes from the behavior of gravity.
Gravity is the only real force at work here, The mass affects the gravity, but the gravity is the only one that could be termed a "force".
It has to get up to 7km a second to get out of earth's orbit, then it orbits around earth.
The simplest and best answer to that question is: -- Without gravity, there would be no astronomical orbits. -- Once you completely understand gravity, you can figure out everything there is to know about orbits, because it all comes from the behavior of gravity.
The planets' own gravity has made them spherical. Also there are other effects such as their ability to retain an atmosphere, etc. The Sun's gravitycauses the orbits of the planets.
The sun's gravity holds the planets in their orbits. It also holds other space objects in their orbits, such as asteroids.
There is gravity in space. Gravity is what makes orbits possible.
The force of gravity causes orbits.
The sun itself
gravity
Gravity
no