Voyager 1 will soon achieve a cosmic milestone. Allow me to explain…
When you turn on the light in a room it looks like it becomes instantly bright. But that's not quite the case. In reality, light races from the bulb at nigh on 186,000 miles per second, so it doesn't fill the room instantaneously - but it does get mighty close
186,000 miles per second is mind bogglingly fast. At that speed you could circle the Earth seven times in the blink of an eye, or reach the moon in just over a second.
...