Answer: I think it is noble gasses.
Explanation: Use the website Dynamic Periodic Table for stuff like that it helps.
Ultraviolet rays has the most energy
If we use mile or something else it will be hard to measure in sky .
Because the mile or meters too short for the space,
Galaxy and stars are too long far away from us if we use mile or meter,
It till be take like miliion year to measure.
Answer:
I say the second one, im not rlly sure tho
Explanation:
