Oh this is fantastic! My father teaches astronomy to kids (he has a mobile planetarium that he takes around schools [1]) and one of the main pain points he has

Oh this is fantastic! My father teaches astronomy to kids (he has a mobile planetarium that he takes around schools [1]) and one of the main pain points he has mentioned is communicating a sense of scale to them. This is elegant because it mixes the concept of "imagine this orange is the earth, mars would be in <nearby town>" within the constraints of a web page. Kids have difficulty visualising distances in an abstract way - but time is much simpler. And the length of the scroll to Mars really emphasises this. Great visualisation. 1. http://www.starlincs.co.uk http://www.starlincs.co.uk