Conservation of energy. E= -mu/r + mcV
Conservation of E gives :
0=(d/dr + Del)m(-u/r + cV) = m(v^2/r - cv/r cos(x)) + m(cdv/dr + cDelxV -Del u/r).
The real part is zero:
mv^2/r - mcv/r cos(x) =0 so mv^2/r = mcv/r cos(x0 gives v/c= cos(x) =z the redshift and equilibrium.
The vector part is also zero and gives the orbit:
0 =dcV/dr + vc/r sin(x) T' + vc/r cos(x) R'
T' and R' are the Transverse and Radial unit vectors.
The gravity of the Sun (combined with the inertia of the planets) causes the planets to orbit the Sun.
Gravity keeps planets in orbit around the Sun.
Planets orbit the sun because gravity keeps them from escaping, and momentum keeps them moving forward. The orbits are elliptical, which is like an oval.
The force of the Sun's gravity keeps them in their orbits.
The Sun has a massive gravitational pull, it is strong enough to hold the planets in their place while they orbit it.
Gravity is what keeps the planets going in their orbits. If gravity just stopped, then the planets would go flying in a straight line tangent to their orbit.
The two planets with overlapping orbits are Neptune and Pluto. These are the only two planets that have overlapping orbits.
Gravity
Gravity and velocity (inertia) keeps planets in orbit around suns.
It isn't actually a who, but a what. That what is Gravity.
The gravitational pull of the sun keeps the planets in orbits... Although some people think it is magnetism....
The force of gravity causes orbits.
gravity
Planets orbit the sun because gravity keeps them from escaping, and momentum keeps them moving forward. The orbits are elliptical, which is like an oval.
The gravity of the Sun keeps the planets in their orbits. They stay in their orbits because there is no other force in the Solar System which can stop them.
The force of the Sun's gravity keeps them in their orbits.
Centripetal force and Gravity
The force you seek is gravity.
The gravity that keeps the planets in orbit is the sun's gravity, which is a product of the sun's mass.