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Do astronomers know how galaxies are formed?
Astronomers have various theories on how galaxies are formed, including the idea that they started as small clumps of matter that grew through mergers and collisions. Observations and simulations have provided insights into the evolution of galaxies over billions of years, but the precise details of galaxy formation remain an area of active research and ongoing discovery.
Do galaxies change over time explain your answer?
it changes overtime with constant movement and change in rotation
What are the fifteen galaxies?
15 Galaxies? There are over 1,000,000,000 galaxies possibly more.
How are astronomers able to determine that quasars are so small?
Astronomers determine the size of quasars by analyzing the variability of their light. Quasars show rapid and dramatic changes in brightness over short periods, indicating that they must be very compact, likely smaller than our own solar system. By studying the time scales of these changes, astronomers can estimate the size of quasars.
How did astronomers discover an object pulsing waves in space?
Astronomers discovered an object pulsing waves in space by observing changes in the intensity of its light over time. This pulsing pattern indicated that the object was emitting regular waves of energy, which led to the discovery of its pulsar nature.
How long would it take if astronomers made the observation of at least 100 billion galaxies over the entire sky?
I don't think we can see 100 billion galaxies from our solar system, so it wouldnot be possible to count that many.In any case, assuming it were possible to find, identify, and make a recordof one galaxy every second, then to gather 100 billion of them would takesomething like 3,170 years . . . roughly the length of time that has elapsedsince the Israelites' Exodus from Egypt.
How many Galaxies does Havells Sylvania have Do they have one in Delhi also?
At present the company has 100 galaxies in all over the country and in which 4 galaxies are in Delhi.
Who found out about how many stars there is?
The exact number of stars in the universe is not known, but estimates suggest there are around 100 billion to 200 billion stars in our Milky Way galaxy alone, and there are likely over 2 trillion galaxies in the observable universe. Astronomers use various methods, including surveys and calculations based on the brightness of galaxies, to estimate these numbers. The work of astronomers like Edwin Hubble and advancements in telescopic technology have significantly contributed to our understanding of the vastness of the cosmos. However, the true number of stars remains an estimate due to the sheer scale and complexity of the universe.
Why have the number of stars changed?
The number of stars in a galaxy can change due to the birth and death of stars, as well as interactions with other galaxies like mergers and collisions. Additionally, new stars can form from the gas and dust present in galaxies, contributing to changes in the total number of stars over time.
What does knowing the rate at which the universe is expanding tell astronomers about the big bang?
If the rate of expansion were constant then astronomers could look at the current location of galaxies and, "by running the clock backwards", work out when they would have all been at one position.
What is the primary force involved in the formation of galaxies after the big bang?
Gravity is the primary force involved in the formation of galaxies after the big bang. Over time, the gravitational attraction between matter caused it to clump together, forming structures like galaxies and clusters of galaxies.
Why do scientists study distant galaxies to learn about galaxies?
Scientists study distant galaxies to understand the formation, evolution, and properties of galaxies over time. By observing galaxies that are far away, they can explore the universe at different epochs and gain insights into how galaxies have changed and evolved since the early universe. Studying distant galaxies also helps scientists refine theories about the laws of physics and the nature of the universe as a whole.
