Este libro ilustrado para niños explica lo que pasa cuando dejan de girar los trozos de roca, hielo y polvo que flotan en el espacio. Discover what happens when pieces of rock, dust, and ice that are floating in space stop orbiting the sun. These leftovers are known as comets, asteroids, and meteoroids.

In a divided country on the verge of war, two childhood friends, Amir and Hassan, are about to be torn apart forever. It's a glorious afternoon in Kabul and the skies are bursting with the exhilarating joy of a kite-fighting tournament. But in the aftermath of the day's victory, one boy's fearful act of betrayal will mark their lives forever and set in motion an epic quest for redemption. Now, after twenty years of living in America, Amir returns...