let's speak to dr hannah sargeant, planetary scientist at the university of leicester. welcome. �*come they are welcome. �* come they are all in line all at once? it welcome. - come they are all in line all at once?— in line all at once? chance, to be honest. happen chance, to be honest. all the planets in the solar allthg planets in the solar orbiting the sun at system are orbiting the sun at different rates and at some point in the history of our 77777 at many points solar system or at many points in the history of our solar system, they will all been system, they will all have been to collect on one side. this all of the other seven week all of the other seven planets will be on one side of while earth remains on the sun while earth re—a�*s an other side, means we actually 7 actually get to all of will actually get to see all of those other planets in the night sky. extraordinary. obviously. _ night sky. extraordinary. obviously, they - night sky. extraordinary. obviously, they all - night sky. extraordinary. obviously, they all orbit | night sky. extraordinary. l ob