Animation: Using Planets to Visualize the Speed of Light

*content from Visual Capitalist; link to original* Written by James O’Donoghue We often come across the term “light-year” in the context of space travel. But what does it actually mean? A light-year is the distance light travels in one year. At a speed of 186,000 miles/sec (300,000km/sec), light travels 5.88 trillion miles (9.46 trillion km) in a […]