Similar Methods Using Other Media
Balloon mail is a similar method of sending undirected messages through the air. The advantage of balloon mail is that it can be launched anywhere and can in principle reach any point on Earth. A further advantage is that it can be launched more easily, since a bottle dropped into the ocean could be washed back to land by the surf.
The glass interior shell of the Westinghouse Time Capsules of the 1939 New York World's Fair and 1964 New York World's Fair was made of Pyrex, where the exterior metal casing was a special copper alloy of "Cupaloy" (1938) or "Kromarc" stainless steel (1965) to withstand the effects of 5000 years of time, when they are expected to arrive to the people intended.
The U.S. space agency NASA has launched several interstellar "messages in bottles." A graphic message in the form of a 6 by 9-inch gold-anodized aluminium plaque, known as the Pioneer plaque, was bolted to the frames of the Pioneer 10 (launched on March 2, 1972) and Pioneer 11 (launched on April 5, 1973) spacecraft.
In August and September 1977, NASA launched two spacecrafts, together called the Voyager Project. Each carries a 12-inch gold-plated copper disk, known as the Voyager Golden Record, containing recorded sounds and images representing human cultures and life on Earth.
In 1999, 2001, 2003 and 2008 the Yevpatoria RT-70 radio telescope has transmitted messages to any potential extraterrestrial civilizations:
- Cosmic Call
- Teen Age Message
- Cosmic Call 2
- A Message From Earth
Read more about this topic: Message In A Bottle
Famous quotes containing the words similar, methods and/or media:
“Let the day perish wherein I was born, and the night in which it was said, There is a man child conceived.”
—Bible: Hebrew Job, 3:3.
A similar imprecation is found in Jeremiah 20:14-15.
“The ancient bitter opposition to improved methods [of production] on the ancient theory that it more than temporarily deprives men of employment ... has no place in the gospel of American progress.”
—Herbert Hoover (1874–1964)
“The media network has its idols, but its principal idol is its own style which generates an aura of winning and leaves the rest in darkness. It recognises neither pity nor pitilessness.”
—John Berger (b. 1926)