The Invisible Universe: The Story of Radio-Astronomical Discovery
Dept. of Physics
The University of Memphis
Feb. 22, 2006, 4:00pm, Manning Hall 201
Refreshments served at 3:30pm, Manning Hall 222
Radio astronomy is one of the great adventures of the human spirit. Exploratory behavior,
the primal urge that drives us into the unknown, is rooted in curiosity and expressed
in a deep human hunger for venturing into new worlds, a hunger that has been dramatically
expressed in thousands of years of slow, systematic, and sometimes frightening journeys
of exploration and evolution.
Such journeys, overland and across the seas and oceans, have carried people from their
birthplaces to the most distant corners of the planet and farther. Like pollen on
the wind, our species has moved from the caves of earth to the craters of the moon.
Our instinct drives us on, not just to the planets, but further, into the universe
beyond our senses where profound mysteries have been uncovered, mysteries that challenge
our imagination and our capacity for comprehension.
Radio waves from space carry information about some of the most intriguing natural
phenomena yet discovered by human beings. This is the bailiwick of radio astronomy.
Faint radio signals from space memorialize the death of stars and tell of awesome
explosions triggered by black holes in galaxies in the depths of space.
They contain the secrets of interstellar gas clouds and carry messages from the remnants
of the Big Bang that propelled our universe into existence. The story of radio astronomy
is what this abundantly illustrated talk will be about, the tale of the constant quest
to express in clearer visual forms the wondrous information carried by radio waves