Measuring the size of the Universe
Finding out the distance from the stars to Earth may seem like a huge task at hand. And don’t get me wrong, it is. However, in this video by the Royal Observatory Greenwich, they breakdown how scientists measure the Universe in very simple terms using somewhat simple math.
H/t to Geeks are Sexy for the video. If you’re curious about the picture inset, it’s a timeline of the Universe from it’s birth to now, which is a period of 13.7 billion years. In the earliest moment of the birth of the Universe, there was a period called “inflation” which produced a burst of exponential growth in the Universe. Below is a larger version of the image, which is supplied by NASA.