A blueshift in the galaxy's spectrum - that is, the frequency of the light, as observed by us, is greater than when it was emitted.
The spectral lines move towards one direction, or towards the other direction, depending on the relative speed.
The blue shift in the spectrum of the Andromeda galaxy indicates that it is moving towards the Earth and the rest of the solar system. This is because the light waves from the galaxy are compressed as it moves closer, causing the wavelength to shift towards the blue end of the spectrum.
Most of them. except for Andromeda galaxy which is coming towards us - our Milky Way galaxy and they both will collide in 3-4 billion years(Repetition of ''Big Bang'')
Edwin Hubble discovered that the majority of galaxies are moving away from Earth, leading to the formulation of Hubble's Law. He observed a correlation between a galaxy's distance from Earth and its recessional velocity, indicating that the farther a galaxy is, the faster it is moving away. This discovery provided strong evidence for the expansion of the universe and fundamentally changed our understanding of cosmology.
Some stars ARE moving towards us. The Andromeda Galaxy will collide with us in millions of years. The universe is expanding because of the "Big Bang", so almost everything is moving away from us.
If a galaxy is moving towards the Earth, its spectrum will be blueshifted. This means that the wavelengths of its emitted light are compressed, resulting in a shift towards the blue end of the spectrum.
Sorry, Andromeda and earth are moving away from each other, not towards each other.
A blueshift in the galaxy's spectrum - that is, the frequency of the light, as observed by us, is greater than when it was emitted.
The spectral lines move towards one direction, or towards the other direction, depending on the relative speed.
incorrect. The farther away from earth a galaxy is, the faster it is moving.
The Andromeda galaxy is moving towards us (The Milky Way Galaxy) at about 432,000 kph. It's expected to start merging in around 3 -> 4 billion years time.
No, however, we can determine whether a galaxy is moving towards or away from us, by looking at the shift in its spectrographic analysis. There are "red shifts" and "blue shifts" in spectrographic results. "Blue shifts" indicate that a galaxy is moving towards us, because the wavelength of the light emitted by the galaxy is compressed, causing it to shift to the blue end of the colour spectrum. "Red shifts" indicate that a galaxy is moving away from us, because the wavelength of the light emitted by the galaxy is being stretched towards the red end of the colour spectrum.
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.
Look at the spectrum of lite from a galaxy if there is a red shift the galaxy is moving away from us or a blue shift the galaxy is coming toward us most have a red shift due to expansion of the universe we are all flying away from another
The blue shift in the spectrum of the Andromeda galaxy indicates that it is moving towards the Earth and the rest of the solar system. This is because the light waves from the galaxy are compressed as it moves closer, causing the wavelength to shift towards the blue end of the spectrum.
Most of them. except for Andromeda galaxy which is coming towards us - our Milky Way galaxy and they both will collide in 3-4 billion years(Repetition of ''Big Bang'')
300 km/s Edit: I've seen that estimate, but it's not straightforward. It's not like finding how fast the Earth orbits the Sun, for example. For one thing the largest galaxy, called Andromeda, is moving towards Earth.