What is humankind's place in the universe? Why is space exploration important for our future? Dreams have always shaped our future. We built ships to reach new continents and trains to cross countries and continents. The automobile revolutionized individual transport. Airplanes allowed us to travel long distances in a matter of hours. Rockets showed us all that even the sky must not be the limit. We put men on the Moon. Our space probes have already explored large portions of our solar systems. And we have plans to send people to Mars. Our telescopes cannot only observe galaxies and distant stars, they are about to take a closer look at planets orbiting those stars. More than 200 exoplanets have already been found. Soon this number will grow into the thousands...