Write the width of the universe in scientific notation.
{"Image DocumentName": "Write the width of the universe in scientific notation.", "Image ImageDescription": "210,000,000,000,000,000,000,000 miles. Where is the decimal point now? After the last zero. Where would you put the decimal to make this number be between 1 and 10? Between the 2 and the 1.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}