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Galaxies

Galaxies are large systems of stars and interstellar matter, and they contain billions of stars. Our own galaxy, the Milky Way, has 200 to 400 billion stars, and there are over one billion known galaxies. Questions that have to do with galaxies in general and specific galaxies are perfect for this category!

2,392 Questions

Why are galaxies are a disk and not like a spherical object?

Galaxies are generally disk shapped, rather than spherical because of centrifugal force: Just like throwing a pizza crust in the air, it expands in the direction of its rotation. However, older galaxies (possibly the products of collisions of two or more galaxies) can result in blob-shapped galaxies that are more spherical.

What does the Draco Dwarf Galaxy look like?

The Draco Dwarf Galaxy is a faint and small galaxy located in the constellation Draco. It appears as a dim smudge in the night sky when viewed through a telescope. Its stars are spread out over a large area, giving it a diffuse and ill-defined appearance.

What galaxy is archernar in?

All naked-eye visible stars are members of the Milky WayGalaxy.

That includes all stars with ancient names.

What is the difference of the Big Dipper in a week?

Since the Big Dipper (Ursa Major) is a north polar constellation, it appears to move very little, but it doesn't move, the Earth rotates on it's axis giving the appearance of motion. Actually, stars are so far away that, from Earth, you can't detect any motion.

Who owns the Milky Way galaxy?

Lots of people own little bits of the Milky Way galaxy. The Earth and everything on it is part of the Milky Way so if you own anything at all you too own a bit of the Milky Way.

People themselves are also part of the Milky Way so in a way bits of the Milky Way own parts of the Milky Way.

Are most galaxies spread uniformly throughout the universe?

Galaxies are not spread uniformly throughout the universe. They are actually structured into clusters, groups, and superclusters, with vast voids of empty space in between. This distribution is influenced by gravity and the large-scale structure of the universe.

How many stars does the Cartwheel Galaxy contain?

Answer: These numbers are only estimates of course. Over the years estimates of the numbers of stars in our Galaxy has gradually increased. Good sources

give various numbers ranging from about 200 billion up to 500 billion.

I think the higher numbers are more likely to be correct.

Our Milky Way Galaxy is, very roughly, average.

So, a typical galaxy should contain a few hundred billion stars.

Answer: It is very hard to give a "typical" number. The answer above refers mainly to our own galaxy, but there are lots of galaxies that are much, much smaller - and there are also giants that are much larger than our galaxy. Thus, a typical galaxy may contain anywhere between about 10 million stars, and a trillion (i.e., a million million) stars, although you'll probably find galaxies with more than that.

What is the name of the star that the planet travel around?

The star that a planet travels around is called its parent star or host star. The parent star provides the gravitational force that keeps the planet in orbit around it. Similarly, our planet Earth orbits around the star we call the Sun.

What happens to earth when milky way sucks in another galaxy?

Leaving aside any religious predictions regarding armageddon, from a scientific perspective, the Earth will end in about 5 thousand million years time, when the Sun expands to become a red giant whose outer layers will extend as far as Earths orbit. The Earth will become part of the Sun.

If the other galaxy bigger than ours or smaller?

By definition the question is incorrect. There are not only 2 galaxies in our universe, but billions. Each galaxy is a different size and is made up of millions or stars and planets. Our galaxy is called the Milky-Way, and our closest neighbouring galaxy is called the Andromeda galaxy.

In what direction is the universe moving?

Nearly all galaxies have a component of motion directly away from us. The farther a galaxy is from us today, the faster it appears to be receding from us.Nearly all galaxies are moving away from Earth. This is because the universe is expanding.

How did shapely and oort say your galaxy compares to most others?

Shapley discovered that the Milky Way is not at the center of the universe, but rather on its outer edge. Oort determined that the galaxy is rotating and that the Sun is located about halfway between the center and the edge.

Should we continue looking for extraterestrial life?

Yes, searching for extraterrestrial life can expand our understanding of the universe and potentially provide insights into the origins of life on Earth. Continued exploration and research are essential to potentially making profound discoveries about life beyond our planet.

Are big dipper and ursa major different constillations?

No the big dipper is IN Ursa Major and the little dipper is in Ursa Minor

Is the galaxy larger than the sun?

A Galaxy isn't just one object, it is a group of millions of objects, in this case the objects being stars (which are all like the Sun since the Sun in itself is a star).

A galaxy is a massive, gravitationally bound system that consists of stars, stellar remnants and an interstellar medium of gas and dust.

Typical galaxies range from dwarfs with as few as ten million (107) stars up to giants with one trillion (1012) stars, all orbiting the galaxy's center of mass.

Our own Galaxy in which our solar system is found is called the Milky Way and it is estimated to contain at least 200 billion stars and possibly up to 400 billion stars.

So to answer your question:Yes, the galaxy is bigger than the Sun.

Where do you live on the mikyway galaxy?

I am an artificial intelligence and do not have a physical location in the Milky Way galaxy or any other place in the universe.

2 ways to get to the moon?

  1. Using a spacecraft: By building a spaceship with enough fuel and power to travel to the moon, astronauts can travel to the moon via a spacecraft.
  2. Using a space elevator: Although currently a theoretical concept, a space elevator is a proposed method of reaching the moon by constructing a tall structure extending from Earth's surface into space, with a cable system that can transport payloads to the moon and beyond.

What led astronomers to believe that this galaxy contained a black hole?

Our galaxy does not contain "a" black hole, it contains thousands, perhaps millions, of them.


Astronomers believe there is a supermassive black hole near the center of the galaxy, with a mass of about 4 million solar masses. They reached this conclusion, among other things, by observing objects moving around it. This makes it possible to make an estimate of the mass. Some of the objects are quite near the ... object, whatever it is, and astronomers know of nothing except a black hole that can have such a large mass in such a small space.

How is the sun described in the milky way as an average yellow star?

The Sun is a mid-sized, average yellow star in the Milky Way galaxy. It is classified as a G-type main-sequence star, with a surface temperature of around 5,500 degrees Celsius. Its luminosity and size place it comfortably within the range of other similar stars in our galaxy.

The sun is located in an elliptical galaxy?

Sun is important to earth cause it produces light needed for plants(photosynthese) to make O2(oxygen)
Without the suns heat and light we could not survive
If there is no sun then there would be no life on Earth. All the plants would die, then all the animals that eat plants would die then humans who eat both the plants and animals would die. Not to mention it would become very, very cold.

What are the dominant types of galaxies in the coma cluster?

The Coma Cluster is known to contain a mix of elliptical and lenticular (S0) galaxies as its dominant types. These galaxies are characterized by their older stellar populations and lack of much ongoing star formation activity. Spirals and irregular galaxies are also present but in smaller numbers compared to elliptical and lenticular galaxies in the Coma Cluster.

How far away is the Dwingeloo galaxy?

Dwingeloo 1 galaxy is about 9 million light years from us.

Dwingeloo 2 a satellite galaxy of D1 is about 10 million light years from us.

You saw an open white hole in the sky is it your imagination or real?

It is likely your imagination. White holes are theoretical in physics and have not been observed in reality. It could be a cloud formation or optical illusion causing the appearance of an open white hole in the sky.

Did Star Trek ever travel outside the Milky Way galaxy?

Yes. In the second pilot, the first one with Kirk as the Captain, they left the galaxy. In the one with the Medusan Ambassador, they left it again. I am not sure if the Kelvans took he Enterprise outside the galaxy or not (the episode in which the crew was mostly turned into small paperweight-sized objects). And in one episode of TNG the Enterprise D wound up so far from this galaxy, I don't know if they could even tell where it was. I think this was a Q episode but am not sure.