Galaxies

Galaxies

Clusters of galaxies

Well, first of all, for the golden shape galaxies those are the galaxies in the cluster.

This is only 1,000 galaxies.

I swear by the galaxies.

I swear by the galaxies.

We can see predictions of galaxies forming, of galaxies colliding into each other, of new solar systems.

Distant galaxies were moving away from us.

It's a very large number of galaxies.

We only have a million galaxies, right?

So all of these galaxies are moving.

There are many galaxies in the universe.

There are places where there are no galaxies and there are places where there are thousands of galaxies clumped together, right.

Galaxies form, and generations of stars form in those galaxies, and around one star, at least one star, is a habitable planet.

In this Hubble image, we see two galaxies.

And behind that are some more modern galaxies.

There is interaction of galaxies. We know this.

Now, there are a few relatively exotic galaxies.

And then we needed some way to turn those fluctuations into galaxies and clusters of galaxies and make these kinds of structures go on.

Galaxies, 100 billion of them estimated in the universe.

And there are thousands of galaxies in this cluster.

It's just one of billions of galaxies in the universe.

These little specks that you're seeing in here, they're galaxies.

But these galaxies are actually moving at extremely high speeds.

How did the galaxies form? How did the planets form?

On a still bigger scale, we see entire galaxies of stars.

The stars in those galaxies probably don't have planets around them.

There are approximately a hundred billion galaxies in the observable universe.

Video Which in turn belongs to a local group of galaxies.

It is a perpetual impulse that pushes galaxies apart from each other.

Galaxies themselves are not strewn randomly in space they tend to cluster.

Of course, we know today that galaxies extend far beyond our own galaxy.

And it's not because galaxies are moving away from each other through space.

But that's still not typical of the universe, because stars come in galaxies.

This has contributed to determining the correlation length of X ray emitting clusters of galaxies, the distribution of galaxies in the southern hemisphere and the mapping of large scale structures behind the Milky Way.

Clouds such as this have been identified previously with the progenitors of current galaxies.

This is about 50 million light years away, so one of our neighboring galaxies.

But galaxies are very violent places, and things can be spun out of orbit.

How are you going to put galaxies out there in a pattern like that?

So clusters of galaxies will tend to form, because of all this gravitational attraction.

And we can also study chemical composition and physical parameters of stars, galaxies, nebulae.

And the supermassive black holes are thought to reside at the center of galaxies.

So here is the Sloan Digital Sky Survey showing the location of a million galaxies.

In those galaxies, you'll be able to do astrophysics, and learn the laws of physics.