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Why isn't the look-back time important among nearby galaxies?
Galaxies change very slowly.
Are space galaxies all the same size?
No, space galaxies are not all the same size. They vary widely in size, ranging from dwarf galaxies with just a few billion stars to giant galaxies containing trillions of stars. Factors such as their formation history, environment, and interactions with other galaxies contribute to these differences in size. Additionally, galaxies can change over time due to mergers and gravitational influences.
How did the universe change over time?
The universe has evolved over billions of years through processes like the Big Bang, expansion, formation of galaxies and stars, and the eventual emergence of planets and life. This ongoing change is driven by physical laws governing the interactions of matter and energy.
What does Darwin theory of evolution explain?
The theory of evolution by natural selection. It explains evolution; the change in allele frequency over time in a population of organisms. Why organisms change over time in differing environments.
Why aren't all the galaxy's the same?
No. Galaxies vary greatly in size, mass, shape, and number of stars.
The numbers of galaxies in the universe seems to be about?
We have no idea. Every time we invent a better telescope, we discover that there are 100 times more galaxies than we previously believed. There is no expectation that this will change any time soon.
Do galaxies change with the seasons because earth is traveling around the sun?
No, galaxies do not change with the seasons because of Earth's movement around the Sun. The change in seasons on Earth is due to the tilt of its axis relative to its orbit around the Sun. Galaxies are vast collections of stars, gas, and dust that remain relatively unchanged on large timescales.
How does the Moon's shape change over time?
How did the dirction of the moon change over time? How did the dirction of the moon change over time?
What exactly is history?
History is the analysis of the human past that enables us to study continuity and change over time. It is an act of both investigation and imagination that seeks to explain how people have changed over time.
How do astronomers find out about changes in galaxies over time?
Astronomers can watch galaxies that are far away. Since the light takes billions of years to reach us from the farthest known galaxies, they would be watching galaxies in the early Universe. It turns out, from such observations, that the Universe is changing.
Change over time is referred to as?
A change over time is often referred to as a gradual change.
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.
