Anyone in the US on April 8 should look up: A rare total solar eclipse is set to be visible from 15 US states and parts of Canada on that day. Starting in Mexico, the solar eclipse’s viewing points will first travel through Texas and Arkansas and then on to Missouri, Illinois, Indiana and Ohio and on to Maine on the east coast, before it can then be seen around Canada’s cities of Toronto and Montreal. For all holidaymakers in the US who want to experience the solar eclipse, NASA has an interactive map on its website that shows where and when the solar eclipse can be seen in Central and North A…