Galaxies

Well, we don't know whats all out there because it's hard to get into other galaxies, but we think its the only one with planets. (We don't know for sure so do some more research)

I think theres only 1 methhod, light years

There is this thing called parallax- an difference in the apparent position of an object viewed along two different lines of sight. Take your finger for example and hold it out in front of you. note where it is against the background. now close one of your eyes(try both). your finger should appear to move against the background. The same method is used to determine where stars are, using geometry and stuff. :P

The Crab Nebula was formed when it's host star exploded as a supernova [See related question]

Spiral, elliptical, and irregular galaxies are all classified types of galaxies based on their distinct shapes and structures. They are similar in that they all contain stars, gas, dust, and dark matter, contributing to their formation and evolution. Additionally, all three types can host star formation and may contain supermassive black holes at their centers. Despite their differences in morphology, they are all part of the same cosmic structure and contribute to our understanding of the universe.

Look up in the sky with a good telescope, and find things that are too fuzzy-looking to be stars. Some of them are nebulas, and a few may be comets - but a lot of them are other galaxies.

Technically the galaxy has no edge because it is a lose gathering of stars held together by the pull of gravity. One object on the outskirts of our galaxy is 2.44 billion light years away from us. This means that if we were to travel at the speed of light, an impossibly incredible speed, it would take 2.44 billion years for us to

reach it. The object is a quasar called 3C 273

A Starburst Galaxy is a galaxy with an exceptionally high rate of star formation, compared to other galaxies.

Galaxies usually have a burst of star formation after a collision or close encounter between two galaxies.

Because of the rate of star formation and the amount of available hydrogen, starburst galaxies are presumed to be temporary.

M82 (Cigar Galaxy) is a well known starburst galaxy [See related link]

Spiral arms are parts of galaxies - both the galaxies and their spiral arms are huge, by our everyday standards. Spiral arms basically contain most of what the galaxies contain - including stars, dust, gas.

A supergiant star may well be large => 80 times that of our Sun. A diameter of around 110 million kilometers, yet our Galaxy is huge. 100,000 light years across or 9.5 x 1017 km (950,000,000,000,000,000km)

It could be any of a number of things, depending on your context; National Geographic Channel, National Guideline Clearinghouse, National Gallery of Canada, National Graduate Caucus, Spiral Galaxy NCG-4565, New general catalogue, New Generation Computing Inc., Northrop Grumman Corporation...and many more.

If you found it on a star map, it almost certainly means "New General Catalogue," which is a listing of so-called "deep sky objects" put together at the end of the 19th century. There are several thousand objects in the catalogue; each is assigned a unique number. The NCG objects include galaxies, nebula, clusters, etc. The NGC is a much more extensive collection than earlier catalogs such as the Messier catalog.

Of course, it could also mean "Nintendo Game Cube" - a previous generation games console.

Stars and planets have some things in common. They are both accumulations of mass. Both have gravity and respond (move) in accordance with gravimetric laws. They both are generally round. They are both "building blocks" of a loose galactic structure. Planets are the building blocks of a star system (they orbit a star) and stars are the building blocks of a local galactic cluster (a group of nearby stars) or a galaxy itself. They are also made with the same gas.

No.

Two galaxies that look to be the same.

Galaxies are generally a collection of stars. But within any galaxy, there are lots of other objects, including planets. So galaxies are related to planets in some ways.

An irregular galaxy. [See related question]

its in the milky way i think

It is the Andromeda Galaxy

Carmiooro NGC was created in 2008.

Ronan The Acusser

It is classified as a barred spiral galaxy.

Eterna City

The largest star in Orion is Betelgeuse with a solar radii of 1,180.

Well light wise the highest category would be blue giants, red giants, and super red giants.

Answer (1) There are many theories, and as you can imagine, they are not easily tested. The above answer is generally the inevitable conclusion. But some of the theories are quite fun. Think for a minute about the surface of a globe, like the earth. If you had a super powerful UFO taxi, you could start traveling along the earth's surface, and you could just keep going, as long as you wanted. You would never ever hit any kind of wall. You could go in a straight line (as straight as you can manage on a globe) or twist and turn. You would never reach a point where you are forced to stop. (You'd go up to avoid inconventient things like mountains and skyscrapers). Now you could find yourself back where you started, and you would often cross a path that you traveled before. But nothing would stop you from moving ahead. So we can say that the surface of the globe is finite, there is only so much area on the earth, but it is unbounded. No fences or weird walls that force you to stop. Now think about space. Because of various kinds of curvature of space, some people think of space itself as being finite, there is only so much, but the amount is beyond imagining-- and it is also unbounded. You can just keep going and going. Although, if you could survive the trip, you might eventually find yourself back where you started, without ever hitting any kind of obstacle at all! Because there is no outside. No end, no outside, yet finite and unbounded. Answer (2) There may be many theories that space is infinite. But since there is a starting point , then there may be an endpoint. Someday we may find that endpoint. Answer (3) The universe goes on in infinite space and time, and we are just intelligent living organisms trying to find answers about it. Answer (4) We can travel as far as our 'horizon', which depends on our size and how long we live. Fortunately, the closer to the speed of light we travel, the longer we live in the universe's time frame. The longer we survive, (individually and as a species), the farther we can get.
Answer (5) We may never know. The universe is apparently constantly expanding. One theory is that the universe will be expanding forever. Another theory is that the universe will stop expanding, and gravity will pull the matter back into one big superdense and super hot singularity. Before the 20th century, astronomers believed the Milky Way galaxy was the entire universe and only 100,000 light years in width. But in the 1920's Edwin Hubble discovered that the farther a Galaxy is from Earth, the faster it appears to be moving. This indicated that the universe was constantly expanding. And perhaps the edge of our universe is a wormhole to a parallel dimension. The universe can be considered infinite.