Just how dark is dark?
Astronomers studied 200,000 Hubble images and made thousands of measurements to look for any residual background glow in the sky.
The "leftover" light they found was likely caused by sunlight reflecting off of dust from comets: https://go.nasa.gov/3UHA6Ak
#Hubble
Astronomers studied 200,000 Hubble images and made thousands of measurements to look for any residual background glow in the sky.
The "leftover" light they found was likely caused by sunlight reflecting off of dust from comets: https://go.nasa.gov/3UHA6Ak
#Hubble
Hubble Detects Ghostly Glow Surrounding Our Solar System
Astronomers sorted through 200,000 Hubble images and made tens of thousands of measurements on them to look for any residual background glow in the sky, in an ambitious project called SKYSURF.Andrea Gianopoulos (NASA)