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How does hubble stay in orbit?
Any satellite is in a careful balance between gravity and inertia.
Is a dwarf planet a moon?
No, a dwarf planet is not a moon. A moon is a body which orbits a large body. However, dwarf planets don't orbit any larger bodies and just orbit the sun in their solar system. Most dwarf planets are failed planets that were forming, but were to close to a gas giant whose gravity messed up the formation of the planet.
What is IAU definition of planet?
"A planet is a celestial body that (a) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and (b) is in orbit around a star, and is neither a star nor a satellite of a planet."
What causes planets to orbit a star?
By the very act of orbiting it. The effect may be incredibly small, but it is real. Any two bodies in an orbital relationship are really orbiting their mutual center of gravity, called their barycenter. This is true even if there are several planets orbiting a star.
Is gravity is there in other planets?
Gravity exists throughout the universe, so the answer is yes. The strength of the gravitational field of any given body will depend upon the size, and density of the body
Does any force act on a body at rest?
Gravity, pressure.
How does the moons gravity affect your planet?
The gravity of any body affects all other bodies. In particular the gravity of the Moon creates the tides in bodies of water here on Earth. It also affects our planet's orbit and angle of tilt relative to the plane of its orbit.
Why do the moons stay in orbit around Jupiter?
Any moon is held in orbit by gravity, just as the planets are held in orbit around the sun by gravity.
What is the path of a planet round the sun?
orbit, the sun's gravity pulls all sorts of things into its orbit.orbital
What keeps the planets in orbit around the sun?
Gravity, combined with the velocities of the planets, keeps the planets in orbit around the Sun.Gravity between any body, such as a planet, and the Sun is one factor. Also the planet has a velocity. These two things combine to keep the planet in orbit around the Sun.Gravitation. The suns gravitational pull. The huge mass of the sun means it has a huge gravitational pull, keeping all of the planets in place. There is also the planets velocity that would take the planet away from the sun if there was no gravity, so these two forces act against each other.
How can Mercury orbit so close to the sun and not be pulled in by the sun's gravity?
For any planet, or indeed, for any object that orbits any other object, the pull of gravity is balanced by the centrifugal force created by the speed of the orbit, so, the stronger the gravitational attraction, the faster the orbit. Mercury orbits the sun very rapidly.
How does hubble stay in orbit?
Any satellite is in a careful balance between gravity and inertia.
Why is kinetic energy a constant for a satellite in circular orbit?
On account of the way gravity works, any satellite in any orbit of any shape moves faster when it's nearer the central body, and slower when it's farther from the central body. If it's in a circular orbit, then its speed is constant. But kinetic energy is 1/2MV2 ... 'M' is mass, and 'V' is speed ... so if the speed doesn't change, then the kinetic energy doesn't change.
How do stars in the galactic halo orbit?
They orbit as stars would in any other halo. It is gravity that causes everything to orbit and "spin around" Stars can also orbit around other stars called a binary orbit.
If an orbit of a planet breaks?
The orbit of a planet is not any kind of physical object; it cannot "break". An orbit is the path that a satellite (natural or artificial) takes under the influence of gravity.
Does gravity act on marbles?
Gravity acts between every two things that have any mass.
Why is the moon spinning around the Earth and not any other planet?
The gravity of the earth is pulling it into orbit.
