No. The question implies that light needs a medium. It does not. Light travels just fine in a vacuum.

If you understand this video then you must have come to the conclusion that "Speed of light is relative to anything". Means the speed of light will be the same until or unless it will encounter with more than this speed. So far humans came to only 2/10000 of speed in today's world means we still a long way to go. Light is so fast that even if you are moving at 200 Miles per hour the speed of light remains the same.

It is a funny thing to hear that space is not really a vacuum - dark energy theories support that space is not a vacuum. If the dark matter is the medium, as a glue in individual galaxies, there is a medium light travels through. The speed of light is on a scale beyond comprehension.

nice lesson

Ladies and Gentlemen, Hello Thanks to WSU for this ISCAP post research area, the cellphone left behind while SETI neighbours scream and wail for submission of humanity. The Jupiter location shows the positron neutrino separation temperatures, as seen upon the World Science Festival Quantum sky. The formation shows the 800 degree C central area of the occasional Jupiter flareups, and the alternating triangular positron sky impressions upon the invisible rind areas of the 2,000 foot sandwich area, and the 13- 15 km hard Crystalline Heaven area, ignored by optical advances 400 years ago. Thanks to our great University people. They are/ we are. The purple positron areas show the 800- 2,000 degree C temperature range, before the gamma light and positrons experience neutrino coupling in that range. We may not have a speed of light. We may have a neutrino coupled speed of light with gamma purple positrons as creating the spectrum sheer from lower temperature area waves. The topic is the speed of Light. Positron formations may only occur below the lower M class star ratings of 2,000 degrees, as the heat above the lower M class stars- SNRL ratings - are in Majorana Tunnel positron TRIVIAL PURSUIT puck patterns. C. Luke Gurbin.