they move by not moving.
Basically, his discovery was that most galaxies move away from us; and that the galaxies that are farther away, also tend to move away faster.
Both
Some nearby galaxies move towards us (blueshift), some move away from us (redshift). Galaxies that are farther away all move away from us (redshift); this means that the Universe is expanding.
The general tendency is for galaxies to move away from each other, in other words, the Universe is expanding. Only in our "immediate neighborhood" will you also find some galaxies that move towards us.
Galaxies generally move away from one another.
Most move away from us, and each other.
The general tendency is for galaxies to move away from one another - the further apart they are, the faster they move away from one another. In other words, the Universe is expanding. Galaxies also have some "random" proper movement, which can be thought of as superimposed on this general expansion.
Away from us.
The force that causes galaxies to move away from one another in the universe is called dark energy.
Most galaxies move away from us - the farther they are from us, the faster they move away from us. This means that the Universe is expanding.
Galaxies generally move through space due to the expansion of the universe, which causes them to drift away from each other. This motion is observed as a redshift in light from distant galaxies, indicating they are receding. Additionally, galaxies can interact gravitationally, resulting in mergers or collisions, but the overall trend is that galaxies are moving apart as the universe expands.
Away.