# Galileo: 400 Years of the Telescope

In 1609, Galileo constructed the first powerful telescope and started observing the heavens, which led to many monumental discoveries. He published his initial findings on the moon and the stars in 1610 in a brief treatise titled "Sidereus Nuncius" ("Starry Messenger"). An original printing of this publication is held by the Rare Book and Special Collections Division of the Library of Congress. NASA scientist Michelle Thaller discusses "Galileo: 400 Years of the Telescope." This illustrated lecture, the first in a series of programs in 2010, is presented through a partnership between the Library's Science, Technology and Business Division and NASA Goddard Space Flight Center.

- Kind: Talk
- Year: 2010
- By: Library Of Congress. Science, Technology, And Business Division
- Genres: Science
- Archive: [Library of Congress](https://www.loc.gov/item/2021688393/)
- Licence or status: Rights statement at the Library of Congress (as the archive states it)
- Credit: Library of Congress
- Who can watch: Tweens profiles and older (the archive gives no rating; placed by Invisible Network from its collection and subjects)

[Watch now](https://invisiblenetwork.ai/watch/archive/loc/2021688393?play=1)