Galaxies

Our own galaxy, the Milk Way, is a spiral galaxy. It is 100 000 light years in diameter and 1 000 lightyears thick. Andromeda, the biggest spiral galaxy in our local group is in 220 000 lightyears in diameter

Galaxies are formed when the gravitational pull comes together pushing stars in. Since black holes were extremely commmon at the birth of the universe, many galaxies own one, such as ours, the Milky Way. Galaxies such as the Sombrero and Andromeda have similar Holes. These holes are supermassive holes, giant gravity balls.

Galaxies generally move away from one another.

it changes overtime with constant movement and change in rotation

They differ. Galaxies basically fall into 4 categories, those being Spiral, Barred Spiral, Elliptical and Erratic.

Halo is the name given for a sparse area in space that surrounds a spiral galaxy. This type of galaxy has special constellations.

I STRONGLY believe the existence of extraterrestrials. I mean, if you look at the stars, there has to be something orbiting around them. What if something lives on those planets? I have no doubts at all that we are not alone.

This is hard to answer. We don't really know

all of the stars but blue&white stars are VERY VERY HOT.

The strongest would be one of the super

nova stars. One of them is called the Orion. The

Orion is a white dust star. Dust clouds have sat in

it for over 1,000,000 years. It's the strongest star we know

in our galaxy.

In the Milky way galaxy (Solar System) , many people

think the sun is the hottest star. It is the most powerful

star in the Solar System, it gives us light and energy, but

thats because it is so close to us.

There is an exploding star as we speak, called Eta Carinae. It has burned/exploded for over 375 years. It could blow itself to bits at any time.

they are moving in all directions away, toward, sideways relative to EarthNearly all galaxies are moving away from the Earth. This is because the universe is expanding.

Yes, furthest the galaxy more it's speed of moving away from each other also universe is expanding continuously therefore space between galaxies is also expanding . Redshift is directly proportional to the distance b/w the galaxies therefore distant galaxies red-shifted at faster rate

There are various ways of categorising galaxies, often based on Edwin Hubble's work on the shapes galaxies. Classifications often give the four main types of galaxies as: Spiral (including barred spiral), Elliptical, Lenticular and Irregular.

Our sun is one of between 200 and 400 billion stars in the Milky Way galaxy. There are literally untold billions of galaxies in the observeable universe.

Our sun is just another star among billions of billions other stars. Some of which are known to have planets orbiting them.

The Ancient Greeks - to them it looked like a stream of milk splashed across the sky.

The Sunflower Galaxy (M63 galaxy) and the Whirlpool Galaxy (M51 galaxy).

personally i have discovered about 21 but im still workin on findin more

One. The Milky Way is our galaxy. Every star you see in the sky at night with your naked eye is in the Milky Way. The closest galaxy to ours is the Andromeda Galaxy, which you can see if you look in the right place, but it will just look like a fuzzy blob and not like a star. The milky way is the name of our galaxy, there are no other galaxies in it.

galaxie 1, 2, 3, 4 and 5

Milky way is the galaxy in which our Earth and the parent star Sun are located.

Our Galaxy, the Milky Way, is part of the local group of Galaxies

If you counted 1 galaxy per second, it would take ~3200 years to count all 100 billion galaxies in the universe.

Depending on size, that's probably either a globular star cluster (a vaguely spherical grouping of tens of thousands of stars within a galaxy), or a galaxy (an elliptical, disc-shaped or irregular grouping of billions of stars - including several globular clusters).

From edge to edge (Although there is no real defining edge) at the speed of light, it would take approximately 100,000 years.

At 1,000 mph it would take you about 67,000,000,000 years. (67 billion years - about 5 times longer than the age of the Universe)

The stars in all galaxies must move otherwise they would fall toward the center and create a gigantic black hole. By spinning, galaxies avoid that fate. Some irregular galaxies exist with stars going every which way. Gravity makes some stars give energy to other stars so some will fall toward the center of those galaxies. That might make irregular galaxies start spinning. Nobody knows, but irregular galaxies should have a whole lot more stars drop toward the center than happens in a regular galaxy. That should make the black hole spin. A black hole gives off tremendous gravity. It gives off more as stars fall into it. That should start the galaxy spinning.