This Real-Time Visual Shows How ‘Slow’ Light Travels in the Vastness of Space
In this brilliant real-time visualization, we start with our planet to grasp just how fast light travels (300,000 km per second/186,000 miles per second). However, things quickly get mind-boggling when we use nearby objects in space like the moon, mars, and sun.
The visualization was created by Dr. James O’Donoghue who is a Planetary Scientist at the Japanese Space Agency, JAXA. Before that, the good doc worked at NASA’s Goddard Space Flight Center.
I love how elegantly a simple visualization can explain concepts like these.