At the speed of light, which is 299,792,458 metres per second.
light travels from the stars (arrtard
The stars are light years away which is the distance light travels in a year. A light year is about 3x108km. The farther something is from you the slower they seem to travel so the stars don't look like the are moving. In reality, they are moving very fast.
Yes, they travel some fast!
Copper is opaque to light - light can not travel though it.
the speed of light
it can travel from 380nm [nanometres] to 740nm
Darkness is the absence of light and will therefore travel at the speed of light (6x108m/s)
yes
at the speed of light
Speed of light.
Approx 9.46 trillion km.
Yes ... in a vacuum.