Gerrit L. Verschuur Pořadí knih (chronologicky)

Hidden from human view and accessible only through sensitive receivers on massive radio telescopes, the invisible universe captivates our imagination. We struggle to grasp the concept of a galaxy exploding, yet this phenomenon characterizes some distant radio sources. Closer to home, radio astronomers monitor pulsars that signal star deaths and reveal states of matter with incredible densities. Between stars, radio emissions from over 120 complex molecules narrate the chemical processes that create the building blocks of life. This occurs in a universe that remains unseen, even with advanced tools like the Hubble Space Telescope. The narrative explores radio astronomy, detailing how radio waves are produced by stars, supernovae, quasars, colliding galaxies, and the universe's origins. It highlights the work of astronomers using large dishes in locations such as New Mexico, Puerto Rico, and West Virginia, who analyze data by "listening" to radio signals from space. Reviews of the first edition praise its engaging storytelling and superb illustrations, emphasizing the human aspects of astronomy. This unique work is recommended for college and public libraries, offering a complete and readable account of the radio sky, making it appealing to both scientists and the general public.

Approximately sixty-five million years ago, a massive comet struck the Yucatan, creating a blast far more powerful than any hydrogen bomb and resulting in a ten-mile deep crater. This catastrophic event vaporized trillions of tons of rock and ignited vegetation across a vast area, unleashing intense blast waves, searing winds, and molten debris, while plunging the planet into darkness for a year. Thousands of species, including dinosaurs, faced extinction, some within hours. The author presents a compelling examination of such collisions and the potential for future threats to Earth, highlighting that around 10,000 tons of space debris, primarily meteors, enter our atmosphere annually. Notable incidents include the 1969 fireball over Allende, Mexico, and the 1992 Peekskill meteor that damaged a car. However, asteroids and comets pose the greatest risks. The text details the discovery of 350 Near Earth Asteroids (NEAs), including the significant threats posed by larger objects. It recounts the 1908 Tunguska event and the dangerous Comet Swift-Tuttle, expected to cross Earth's orbit in 2126. Additionally, it describes the impact of Comet Shoemaker-Levy 9 on Jupiter in 1994. The author also discusses the efforts to track NEAs and their role in Earth's evolutionary history, emphasizing the importance of understanding these cosmic threats. This book captivates anyone interested in space, natural phenomena, or Earth's future.