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What else can I help you with?
How would other galaxies appear to move relative to Earth if the universe were shrinking?
If the Universe was shrinking the galaxies would appear to be moving towards the Earth, and look more blue than they should. This is the opposite to the universe expanding where galaxies would appear to be moving away from the Earth, which we know due to "red shift". Andromeda would be the exception since it's directly moving towards the Milky Way.
Which has a higher frequency a star moving away from earth or towards earth?
I would think that current evidence suggests that the stars moving away from earth, some of them in far distant galaxies moving at unimaginably high speeds, are going much faster than stars moving toward us. The entire Andromeda galaxy is moving toward us and will collide with us in roughly 5 billion years, and it is not moving anywhere near as fast as the distant retreating galaxies.
What could happen if all galaxies experience a blue shift?
It would be an indication that they are moving towards us.
Are the different galaxies in your universe moving and if so in which direction?
No matter in which direction we look, all of the galaxies outside of our "local cluster"are moving away from the earth. And get this ... the farther a galaxy already isfrom us, the faster it's moving away from us.It looks as if we're in the center of everything, and everything is spreading out andmoving away from us. On the other hand, no matter where in the universe an observer might be, it would appear to them that they were at the center, and everything was moving away from them.
Does the earth move?
Yes. The earth spins on its axis and it orbits the sun. The solar system is also orbiting the center of the Milky Way, and the Milky Way itself is moving among the other galaxies in the universe. Really, there is NOTHING that is not moving. Where would it be?
A bacterial cell moving toward light would be an example of?
positive phototaxis.
If you studied the light from the stars using a spectroscope and found that there was no blue shift what would that mean?
It would mean that the stars are not moving toward you.They could still be moving at appreciable speed across your line of vision,but just not toward you.
Where would you be if stars appear to be moving downward toward the horizon?
If you mean straight down, you would be near the equator.
What is the Doppler shift as it applies to light from stars?
You've probably heard the old classical description of the Doppler effect; if you're standing still near a train track, you can hear the sound of the moving train shifted to a higher frequency as the train is coming toward you, and as the train passes by, you can hear the sound shift down in pitch. The sound waves are bunched up a bit as the train is coming toward you, and you hear the train at an increased tone; when the train passes by and moves away from you, the sound waves are stretched out so you hear the sound at a lower pitch. By measuring the change in the sound, you can calculate quite accurately how fast the train was moving when it passed by. For stars, we're not listening to a tone; we're measuring the light spectrum, but the principle is the same. We know what the "normal" frequencies in the starlight would be, for a star not moving towards us or away from us. We measure specific spectrum patterns called "absorption lines". We can detect shifts in these patterns. So, we can measure whether the star is coming toward us (spectral lines at higher frequencies than normal) or is headed away from us (spectrum showing lower frequencies than normal). When we measure the light - and the Doppler shift - of other stars in our Galaxy, we see a mix of stars moving toward us, and stars moving away from us. This is perfectly normal. But when we measure the Doppler shift of the light from other galaxies, we see that most of the other galaxies are moving away from us, and that the farther away they are, the faster they are moving! Note: For those who like a bit of extra detail: The change in the light from distant galaxies is not a true Doppler shift. It's similar, but is caused by the expansion if space itself.
Relationship of red shift and the big bang theory?
The Big Bang theory predicts an expanding universe. The red shift, being the Doppler effect of light when something is receding from you, confirms this because when looking at galaxies the light emitted from them is red shifted. The farther away galaxies have a higher red shift, confirming that all galaxies are moving away from each other, not just the Milky Way (i.e. the universe is expanding).
Would traveling to other galaxies rupture the spacetime contiuum?
No, but it would take millions of years to do the trip.
What do all active galaxies have in common?
In theory, all galaxies originate from the Big Bang, which is the name that describes the explosion that propelled all matter into the cosmos. All galaxies are moving. All galaxies produce energy like light and gravity. Think of galaxies like you would human beings. Although very different in some ways, they are mostly the same.
