Dimming Tucson's street lighting. #Astronomy #science https://t.co/ZbBPYoNVFj

Aug 3, 2020

Dimming Tucson's street lighting. #Astronomy #science https://t.co/ZbBPYoNVFj
— Yusra Salim | يُسرى بِنْت سالم (@Shulab) August 3, 2020

from Twitter https://twitter.com/Shulab