Gravity and forces to create orbits
Universal Gravitation
Newton's law of universal gravitation states that a particle attracts every other particle in the universe using a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers
How was the Milky Way formed?
The Milky Way is a spiral galaxy, having pinwheel-shaped arms of gas, dust, and stars lying in a flattened disc, and extending directly out from a spherical nucleus of stars in the central region. The spherical nucleus is called a bulge, because it bulges out from the disc. While the disc of our Galaxy is made up of stars of all ages, the bulge contains old stars dating from the time the galaxy formed, more than 10 billion years ago. Thus, studying the bulge allows astronomers to know more about how our Galaxy formed.
Unbalanced Force
Unbalanced forces are forces that cause a change in the motion of an object.
Does the Milky Way Galaxy have a center of gravity?
Yes most scientist theorize that the Milky Way has a center and that center of gravity is due to a monstrous black hole . This black hole's gravity and the effect of dark matter and dark energy keeps the galaxy intact otherwise the milky way would have flown apart in different sections or star clusters
Gravity
is the force of attraction between objects that is due to their masses and the distances between them.
centripetal force
the inward force that causes an object to move in a circular path
orbital velocity
the minimum velocity at which a body must move to maintain a given orbit.
_____ is the force of nature that accounts for the formation of planets, stars, and galaxies, and also keeps bodies in orbit around other bodies.
Gravity
How does gravity control Universe?
Gravity dictates the structure of the universe, from the way cosmic bodies form to the way they orbit more massive planets or stars. Every object in the universe that has mass has a gravitational force.
Why is gravity so important?
Gravity is a very important force. Every object in space exerts a gravitational pull on every other, and so gravity influences the paths taken by everything traveling through space. It is the glue that holds together entire galaxies. It keeps planets in orbit. It makes it possible to use human-made satellites and to go to and return from the Moon.
What is the primary force that controls the planet's orbits?
Gravity is the primary force that controls the orbit of the planets around the sun. While each planet has its own gravity based on the size of the planet and the speed at which it travels, orbit is based on the gravity of the sun. The sun's gravity is just strong enough to keep the planets pulled toward it to create an orbit pattern but not strong enough to pull the planets into the sun.
How does gravity control Milky Way?
Gravity plays a number of roles in a galaxy, pulling stars toward one another, flattening the collection of stars into a plane, causing stars to slingshot past one another, and the creating a spin of the entire galaxy.
What other force affects the orbits of the planets?
INERTIA The physical law that states that objects in motion have a tendency to remain in motion also plays a role in keeping the planets in orbit. Once the planets were in motion, the laws of physics keep them in motion by virtue of inertia. The planets continue to move at the same rate in their orbits.
How does inertia work with gravity to control the orbits?
The gravity of the sun and the planets works together with the inertia to create the orbits and keep them consistent. The gravity pulls the sun and the planets together, while keeping them apart. The inertia provides the tendency to maintain speed and keep moving. The planets want to keep moving in a straight line because of the physics of inertia.
orbit
The path that a body follows as it travels around another body in space.
