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Other galaxies were first believed to be?
Nebulae or star clusters within the Milky Way Galaxy.
What are the structures in space from smallest to largest?
From smallest to largest, the structures in space are: planets, stars, star clusters, galaxies, galaxy clusters, and superclusters. Within each of these categories, there is a wide range of sizes and variations.
Since the universe is thought to be expanding why do galaxies collide?
Because although the universe is expanding, the galaxies within it are grouped into clusters. These clusters are still under the influence of gravity, so slowly, over many years, they are attracted towards each other and can collide with one another.
Do all galaxies have planets in?
No, not all galaxies have planets. Planets are found within individual galaxies, such as our Milky Way galaxy, but there are many galaxies in the universe where planets may or may not exist.
What pairs of objects are the farthest apart?
The pair of objects that are the farthest apart in the universe are galaxies. Galaxies are clusters of billions of stars and are separated by vast distances in the universe. The observable universe is about 93 billion light-years in diameter, so galaxies within it can be incredibly far apart.
Do stars form into galaxies?
Galaxies are vast collections of stars. So I guess you could say that a big group of stars forms a galaxy. Our galaxy has many big clusters of stars within it, so not all star clusters are galaxies. If you have a cluster of several million or billion (or trillion) stars surrounded by a lot of empty space, that is probably a galaxy.
What percentage of carbon dioxide is on venus?
In order to answer that question it is necessary to know how much carbon dioxide there is on Venus and how much is in the whole universe. Whereas the former can be estimated, there is little hope of estimating the latter to any degree of accuracy. However, based on the estimated number of galaxy clusters, and galaxies within those clusters, and stars within those galaxies with planetary systems, it is likely that the percentage of universal carbon dioxide that is on Venus is as close to 0% as makes no difference.
What is a Supernova clusters?
Supernova clusters are regions within galaxies where multiple supernova explosions have occurred relatively close to each other in space and time. These clusters provide valuable insights into the life cycle of massive stars and the impact of supernova explosions on their surrounding environment. A well-known example is the Cygnus Loop in the constellation Cygnus, which is a supernova remnant created by a cluster of supernova explosions.
What role does gravity play in forming galaxies?
Gravity is the force responsible for bringing together gas, dust, and stars within galaxies. It acts to pull these materials closer together, leading to the formation of structures like galaxy clusters and superclusters. Gravity also influences the movements of objects within galaxies, such as stars orbiting around a galactic center.
In order of size starting with largest star cluster galaxy universe star planet?
Universe, galaxy, star cluster, star, planet. The universe encompasses all galaxies, with galaxies containing star clusters, which consist of stars. Planets revolve around stars within galaxies.
What is bigger than a galaxy cluster?
The visible universe. I'm a bit of a space buff and to my knowledge there aren't any celestial structures that are larger than a galaxy cluster. The only one I've come upon is the visible universe itself. I could be wrong about that but then again, I could be right. That tends to be how celestial questions like that one go. Hope this helps. Answer 2: Galaxy clusters are clusters of galaxies and therefore larger than individual galaxies. Superclusters are clusters of galaxy clusters and so are larger then galaxy clusters. Filaments are collections of superclusters and are the largest known structures in the universe.
What is an globular cluster galaxy?
A globular cluster (without "galaxy") is a large group of stars, in form of a sphere, within a galaxy. A galaxy may have thousands of such clusters. I am not sure whether the term "globular cluster galaxy" has any meaning in astronomy. It might be a galaxy with a lot of such clusters.
