Our galaxy isn't stretching either, but it's the space between the galaxies that is stretching.

The gravitational interaction among these galaxies should continue for hundreds of millions of years.

It is also used to map gravitational disruptions between galaxies.

All these interactions are just through the gravity over interstellar or almost you could call it intergalactic.

Dark energy, on the other hand, is putting more and more space between the galaxies, makes it, the gravitational attraction between them decrease, and so it impedes the growth of structure.

Objects 1 101 are individual peculiar spiral galaxies or spiral galaxies that apparently have small companions.

You see a filament, you see the light is the invisible matter, and the yellow is the stars or the galaxies showing up.

Still, our physical reality here on Earth is intimately connected to those distant, invisible galaxies.

Still, our physical reality here on Earth is intimately connected to those distant, invisible galaxies.

Other objects, such as UGC 10770, are interacting pairs of galaxies with tidal tails that look similar to spiral arms.

To get distances of galaxies, we need to see individual stars whose properties we recognize.

Okay, let's say this is the size of the observable universe, with all the galaxies, with all the stars, okay, from here to here.

He was the first to describe the shape of the Milky Way and speculate that faint nebulae were distant galaxies.

Both can be regarded as evidence that supermassive globular clusters are in fact the cores of dwarf galaxies that are consumed by the larger galaxies.

In fact, just studying the rings alone, we stand to learn a lot about the discs of stars and gas that we call the spiral galaxies.

The Andromeda Galaxy's two main companions, M32 and M110 (also known as NGC 221 and NGC 205, respectively) are faint elliptical galaxies that lie near it.

The light those galaxies emit, even traveling at the fastest speed, the speed of light, will not be able to overcome the ever widening gulf between us.

Some, such as the Andromeda Nebula, had spectra quite similar to those of stars, but turned out to be galaxies consisting of hundreds of millions of individual stars.

Now maybe those future astronomers will have records handed down from an earlier era, like ours, attesting to an expanding cosmos teeming with galaxies.

Many of the smaller galaxies are very young galaxies that eventually became the major galaxies, like the Milky Way and other galaxies in our galactic neighborhood.

The first four S0 galaxies that were identified as polar ring galaxies were NGC 2685, NGC 4650A, A 0136 0801, and ESO 415 G26.

The best known polar ring galaxies are S0s (lenticular galaxies), but from the physical point of view they are part of a wider category of galaxies, including several ellipticals.

The proper distance formula_11 between two galaxies at time t is just the distance that would be measured by rulers between them at that time.

If you could do this, what you would find that with each passing day, each passing year, each passing billions of years, OK, the distance between galaxies is getting greater.

Here you can see a photo taken by the Hubble telescope, and these arcs marked with the red arrows are in fact galaxies very far away, but whose image has been completely deformed by the gravitational lenses in the foreground.

He was also the first to distinguish between nebulae and galaxies by showing that some (like the Orion Nebula) had pure emission spectra characteristic of gas, while others like the Andromeda Galaxy had the spectral characteristics of stars.

His observations, made in 1922 1923, proved conclusively that these nebulae were much too distant to be part of the Milky Way and were, in fact, entire galaxies outside our own.

If my research group had a logo, it would be this picture here an ouroboros, where you see the micro world on the left the world of the quantum and on the right the large scale universe of planets, stars and galaxies.

So in that case, the Universe would expand eternally, becoming ever colder, darker, more dilute, and you're sitting there on your back, looking at the galaxies living for billions of years, and all is fine, except that the Universe is going to become a very cold, and dark, and lonely place eventually.