Why is the galaxy moving away?
Hubble’s law explains that the reason most galaxies are moving away from one another is because the whole universe is expanding. Pick any two galaxies at random, and the chances are they’re moving away from each other.
What does it mean if a galaxy gives off light that has been shifted toward the red end of the electromagnetic spectrum?
Ever since 1929, when Edwin Hubble discovered that the Universe is expanding, we have known that most other galaxies are moving away from us. Light from these galaxies is shifted to longer (and this means redder) wavelengths – in other words, it is ‘red-shifted’.
Is our galaxy moving away?
As our universe is expanding, almost all of the galaxies we see in the universe are moving away from us, and we therefore see their light more towards the red end of the spectrum, known as redshift.
Is our galaxy is moving?
The Milky Way itself is moving through the vastness of intergalactic space. Our galaxy belongs to a cluster of nearby galaxies, the Local Group, and together we are easing toward the center of our cluster at a leisurely 25 miles a second.