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Did Edwin Hubble discover that galaxies are moving toward the earth?
Wiki User
∙ 13y ago
Hubble discovered other galaxies than our own. His work lead to the idea that these galaxies are generally moving away from our own Milky Way. Further, logical thinkers considered that the universe itself is expanding. And if the universe is expanding, it must at some point have been "compressed" with all the matter closer together. This is the source of the idea we call the Big Bang.
Wiki User
∙ 13y ago
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What is the name of the large spiral galaxy found in the bottom right of the Hubble Deep Field?
The point of the Hubble Deep Field observations is that scientists pointed the Hubble Space Telescope toward a dark patch of the sky where there were no known stars or galaxies. Everything observed in those photos had been entirely unknown before the images were obtained. So, nothing there has a "name"; by now, it probably has an index number in some database. But not a "name".
How do scientists use Doppler shift to support the big bang theory?
It is called The Big Bang Theory, actually. Doppler shift shows that galaxies are moving away from each other at rates that depend on how far apart they are. According to the Big Bang Theory, the universe began with an enormous explosion. Then, the entire universe began to expand everywhere at the same time.
Why is red shift and blue shift important to the earth?
Redshift or blueshift is a change in the frequency of the light you receive, compared to the frequency at which it was emitted. A redshift is a reduction in frequency; this basically means that the object that emits the light is moving away from you.
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.
Why did Houston retreat to east instead of moving toward Santa Anna's army?
because they wanted some burritoes
In 1912 an astronomer at Arizona's Lowell Observatory noticed that the lines in the spectra of most galaxies shifted toward the red end of the spectrum Another American astronomer Edwin Hubble lat?
Galaxies are moving away from each other in a constantly expanding universe
Are any of the galaxies moving toward earth?
Yes. Andromeida galaxy.
What would it mean if galaxies were moving toward each other?
Pokemon rulez
In which direction are nearly all galaxies moving relative to earth?
they are moving in all directions away, toward, sideways relative to EarthNearly all galaxies are moving away from the Earth. This is because the universe is expanding.
Does the galaxy moving each other?
Yes, some of the galaxies are moving toward each other like our milky way and Andromeda moving toward each other with the speed 120 km per second and after 3 billion years from now these galaxies collide with one another. The current distance of Andromeda from milky way is about 2.5 million light years
What is the exact number of galaxies are there?
We cannot even guess how many galaxies there are, because every time we develop newer and more powerful telescopes, we discover that there were 10 times more galaxies than we could see with the last generation of telescopes. The number is undoubtedly in the billions - perhaps billions OF billions.One of the things that drove this point home was one of the first photos from the Hubble Space Telescope, called the "Deep Field Survey". Astronomers pointed the Hubble toward a tiny spot in the sky where there were no stars, and took a photo for a week or so.In that tiny spot with no stars, Hubble saw galaxy after galaxy, THOUSANDS of then, all too faint and far away to be seen at all with any ground-based telescope.
What did hubble conclude when he noted that light emitted from star is shifting toward the red end of the electromagnetic spectrum?
The obvious conclusion is that the Universe is expanding - the redshift is interpreted as a Doppler shift, therefore it seems that distant galaxies are moving away from us. This interpretation is widely accepted nowadays; there aren't any other explanations that are generally consistent with observations. I am not sure whether Mr. Hubble concluded that, but I think he did.
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 is it called when galaxies are moving toward each other?
There isn't a particular name, however, when they are moving towards us, their spectrum is shifted to the blue region. So they are referred to as blue shifted galaxies but that is only relative to ourselves. See related link for more information.
Are any galaxies moving toward the Milky Way galaxy?
Yes. The Andromeda Galaxy, our galactic neighbor, is heading toward the Milky Way and is expected to collide with our own galaxy in about 3 billion years.
What other galaxies are in the universe?
We don't have any idea how many there are. Hundreds of billions, certainly, and probably far more. Each galaxy contains hundreds of billions of stars. Some of the most astonishing photos generated by the Hubble Space Telescope were the Hubble Deep Field observations. Scientists pointed the Hubble Space Telescope toward a tiny patch of the sky that seemed absolutely empty of stars. It turns out that in this star-less spot, smaller than a grain of sand held at arm's length, the Hubble saw thousands of galaxies. See the link below for a video of the discovery.
Are most galaxies moving toward or away from each other?
Most galixies are micing away from each other, at a constantly accelerating pace as time passes.
