So I kinda spaced out in class and I have no idea what this even means.
So we have a chart and it has galaxies with their velocities and distances from earth. The question is "Which galaxy has the biggest redshift?"
I looked up redshift but still dont undersatnd what it means
Most Helpful Guy
As things get further and further away, the light waves get slower and slower.
Faster wavelengths appear blue. Slower ones appear red. So when something gets further away, the light waves take longer to reach you and slow down, meaning they're more red.
In other words, the further something is away, the more red it will appear.
With this logic, "Which galaxy has the biggest redshift" means "Which galaxy has the slowest light waves",
"Which galaxy is the furthest away?"4