InfoCoBuild

Mapping the Milky Way

Radio astronomy can unmask structures in the universe that are otherwise invisible. And the discoveries are spectacular. One of the most ambitious projects has been the mapping of the structures of the Milky Way, an immense task that has taken decades. Using small radio telescopes in the US and Chile, Thomas Dame's team has made a series of great discoveries, including the identification of two previously unknown spiral arms in the Milky Way. In this lecture, Dr. Dame explains how radio telescopes reveal the invisible, why mapping the structure of our own galaxy is so difficult, and how the famous discoveries of this project were made.

Thomas Dame, PhD, Director, Radio Telescope Data Center, Harvard-Smithsonian Center for Astrophysics, and Lecturer on Astronomy at Harvard University. (from scienceforthepublic.org)

Mapping the Milky Way


Related Links
The Cosmos: A Beginner's Guide
This is a BBC documentary series presented by Adam Hart-Davis, offering an introductory look at the world beyond us.
Large Telescopes and Why We Need Them
Beyond the Solar System, all astronomers have to work with is the light that falls to the Earth from distant cosmic objects. Newer, larger telescopes are always needed to boost scientific progress.
The Multiwavelength Universe
The light we see with our eyes only tells a small part of the Universe's story. To get a complete picture of how the Universe works, astronomers must study objects over the full range of light, the electromagnetic spectrum.
Hunting the Edge of Space
This is a two-part PBS documentary examining how a simple instrument, the telescope, has fundamentally changed our understanding of our place in the universe.
Survey of Astronomy
We'll explore the Sun, the planets, the many other objects found in the Solar System, stars and galaxies, dark matter, dark energy, the fate of the universe, and the possibility of extraterrestrial life.