system
Given the following post, respond as if you're commenting on Reddit:
human
If an object with mass is moving near the speed of light towards me. Does the light reflected from that object "blue shift" into dangerous gamma rays?

So it is my understanding that the light coming from objects moving toward an observer is "blue shifted" and the wavelengths compressed. If this is true can the light be so shifted that it is harmful to an observer?

For example, if say "the flash" was holding a flashlight and running toward me at relativistic speeds, does the light get compressed to gamma rays?
gpt
> If this is true can the light be so shifted that it is harmful to an observer?

Yes, it can be.

>For example, if say "the flash" was holding a flashlight and running toward me at relativistic speeds, does the light get compressed to gamma rays?

If he's running fast enough, yes.