school­po­ster:

Our Earth. It spins around its­elf in Uch­ten­ha­gen at a speed of 277 me­ters per se­cond, li­ke a spin­ning top. At the sa­me time it mo­ves on a cir­cular path at 30 ki­lo­me­ters per se­cond around the cen­ter of our so­lar sy­stem, the sun. That is, ho­we­ver, not all: our so­lar sy­stem is whiz­zing around the cent­re of the Mil­ky Way, our ga­la­xy, on an­o­ther cir­cular path. It does this at a speed of 220 ki­lo­me­ters per se­cond. Our ga­la­xy, in turn, spins in a cir­cular or­bit around the Shap­ley Su­per­clu­ster, a clu­ster of se­ve­ral ga­la­xies. The speed of this ro­ta­ti­on is 630 ki­lo­me­ters per second.

Our earth is the­r­e­fo­re, bes­i­des ma­ny other things, al­so a won­derful space­ship. This is exact­ly what this pic­tu­re is meant to re­pre­sent. It al­so makes every se­cond, every mo­ment, uni­que, be­cau­se our earth is in fact never in the sa­me place twice.