LITTLE KNOWN FACTS ABOUT TOP 7 WONDERS OF TECHNOLOGY.

At the center of those aspect-by-facet visuals is really a Particular class of star utilised for a milepost marker for measuring the universe’s rate of expansion – a Cepheid variable star. The two pictures are quite pixelated as they are an exceedingly zoomed-in view of a distant galaxy. Each and every on the pixels represents a number of stars