# How gravity affects motion in the universe?

## How gravity affects motion in the universe?

Gravity in our universe Gravity is what holds the planets in orbit around the sun and what keeps the moon in orbit around Earth. The gravitational pull of the moon pulls the seas towards it, causing the ocean tides. Gravity creates stars and planets by pulling together the material from which they are made.

## How gravity and motion affect the shape of your galaxy?

The gravitational force is also responsible to the shape of the stars and planets, as well as many other objects in space. The initial motion of all the material in the Universe was later affected by gravitation, resulting in the rotational motion of the galaxies and in the orbits of the planets on our Solar System.

How does gravity explain observations of patterns in space?

Gravity holds Earth in orbit around the sun, and it holds the moon in orbit around Earth. The pulls of gravity from the sun and the moon cause the patterns of ocean tides. The moon’s and sun’s positions relative to Earth cause lunar and solar eclipses to occur.

How are gravity and time related?

The gravitational field is really a curving of space and time. The stronger the gravity, the more spacetime curves, and the slower time itself proceeds. Earth’s mass warps space and time so that time actually runs slower the closer you are to earth’s surface.

### What two factors affect the size of gravitational force?

When dealing with the force of gravity between two objects, there are only two things that are important – mass, and distance. The force of gravity depends directly upon the masses of the two objects, and inversely on the square of the distance between them.

### What are the two factors that affect gravity?

Are galaxies affected by gravity?

The galaxies are attracted to each other by gravity, but there is another repulsive force which cancels it, perhaps called ‘dark energy’ or ‘the cosmological constant’. With no gradient in potential, there will be no force of gravity to act upon the galaxies.

What 2 factors affect gravity?

## How does gravity work in a vacuum?

In a vacuum, gravity causes all objects to fall at the same rate. The mass of the object does not matter. The spacecraft, its crew and any objects aboard are all falling toward but around Earth. Since they are all falling together, the crew and objects appear to float when compared with the spacecraft.

## Is time the 4th Dimension?

Physics > Space and Time According to Einstein , you need to describe where you are not only in three-dimensional space* — length, width and height — but also in time . Time is the fourth dimension. So to know where you are, you have to know what time it is.