S1: Things are often not what they seem. P: But you are really not, because the Milky Way galaxy, of which you are a part, is moving through space at 2.1 million kilometre an hour. Q: So in roughly twenty second that it would have taken you to read this paragraph, you have already moved thousands of kilometre. R: And that is without taking into account the effects of earth’s rotation on its own axis, its orbiting around the sun and sun’s journey around the Milky Way. S: As you read this sentence, perhaps sitting in a comfortable chair in your study, you would probably consider yourself at rest. S6: This happened without you even knowing it. So imagine the changes that occur to this earth and humanity. Find the correct sequence of P, Q, R and S.