Showing results for "paradox" in Astronomy

Given the fact that there are perhaps 400 billion stars in our galaxy alone and perhaps 400 billion galaxies in the universe, it stands to reason that somewhere out there, in the 14-billion-year-old cosmos, there is or once was a civilization at least as advanced as our own. The sheer enormity of the numbers almost demands that we accept the truth of this hypothesis. Why, then, have we encountered no evidence, no messages, no artifacts of these extraterrestrials?

In 1974 a message was beamed towards the stars by the giant Arecibo telescope in Puerto Rico, a brief blast of radio waves designed to alert extraterrestrial civilizations to our existence. Of course, we don't know if such civilizations really exist. But for the past six decades a small cadre of researchers have been on a quest to find out, as part of SETI, the search for extraterrestrial intelligence.

This is an indispensable guide to physics that offers readers an overview of the most popular physics topics written in an accessible, irreverent, and engaging manner while still maintaining a tone of wry skepticism. Even the novice will be able to follow along, as the topics are addressed using plain English and (almost) no equations. Veterans of popular physics will also find their nagging questions addressed, like whether the universe can expand faster than light.

As technological advances and the creation of flying aircraft became realities, the sighting of UFOs increased, as did the interest in potential contact with aliens. It would hardly be groundbreaking for scientists in the 20th century to have a lunchtime discussion in which the search for extraterrestrial life arises, and the question of where it might reside is innocuous enough. However, a furor was created somewhat innocently when physicist Enrico Fermi voiced his “casual lunchtime remark” in the presence of colleagues in 1950.

Were ancient Greek philosophers right about reality being only an illusion? What was really the biggest blunder of Einstein's life? Is everything we've been taught about the universe incorrect? In The Unobservable Universe, visionary scientist and engineer Scott M. Tyson successfully unravels cosmology from the level of rocket science and brings it down to Earth, demystifying the universe in terms that laymen can comprehend and enjoy, splitting atoms but not hairs on this magical mystery tour of the outback of time and space.

Co-host’s and cousins Julia Falcone and Josh Flitter are here to make space exploration a little sillier! Julia Falcone is a graduate student at Georgia State University studying the effects that supermassive black holes have on their galaxies. She has a strong passion for science communication and improv. In her free time, Julia can be found having way too many opinions about movies, knitting and sewing funky outfits, and organizing coworkers in her union. Josh Flitter is an actor, comedian, and improvisor who has been in the entertainment industry since he was 5 years old. He has starred ...