The observation capabilities of modern astrophysics are constantly increasing. They range from optical telescopes and space telescopes in the infrared to radio telescopes, and from gravitational wave detectors to neutrino observatories. While some focus on light in space, others examine the smallest particles underwater or measure disturbances in spacetime smaller than the diameter of a proton. This book offers an exciting and comprehensive overview of our technical capabilities to explore the universe. It is just as suitable as a foundation for a lecture in astronomy or astrophysics as it is for reading by those interested in the natural sciences.

Arnold Hanslmeier is a professor of astrophysics and was the director of the Institute of Physics at the University of Graz. Research stays and his positions as a guest professor have taken him to locations such as Toulouse, Freiburg, Innsbruck, Tenerife, Vienna, Zagreb, and Slovakia. His repertoire is diverse: lectures for interested laypeople, experienced author of educational, popular science, and specialized books, as well as photographs taken at his private observatory, among other things. In 2023, the asteroid 182674 was named in his honor.