messages sent to outer space

The first radio signal intentionally sent to space with the idea of contacting alien life was beamed outward from the Arecibo radio telescope in Puerto Rico on November 16, 1974

The Arecibo message : 

The message was aimed at the current location of globular star cluster M13 some 25,000 light years away because M13 was a large and close collection of stars that was available in the sky at the time and place of the ceremony,Some applauded this event as a mind-expanding attempt to remind people that Earth is likely not the only planet where an intelligent civilization has evolved. At the time,however the expanded minds at the time felt that we shouldn’t be revealing Earth’s location in space to unknown alien civilizations...It took three minutes to send 1,679 bits of information as binary string

if you are intrested you can find more details online!

Voyager Golden Records(1977):

Are a golden phonograph records aboard both the famous Voyagers ,the contents of the record were selected by NASA in a process took almost a year,ssembled 116 images and a variety of natural sounds, such as those made by surf, wind, thunder and animals,musical selections from different cultures,such as Bach, Mozart, Beethoven, Stravinsky, Guan Pinghu, Blind Willie Johnson, Chuck Berry, Kesarbai Kerkar and Valya Balkanska. The inclusion of Berry's Johnny B. Goode,isn't that great!
and it golden cover which is a road map to our planet earth

Cosmic Call:(1999)

It was based on mathematical and scientific concepts that are thought to be universal, in the hope that any alien who intercepted the messages would understand them.
2 parts, part I  'Scientific' was transmitted three times at a rate 100 bits per second, and the Part II 'Public' - only once at a rate 2000 bits per second.

Teen-Age Message (2001):

Was organized by Alexander Zaitsev,his proposal for a musical message – the "First Musical Concert for Extraterrestrials" was backed by the Yevpatoria RT-70 radio telescope -Ukrainia.

the program included two Russian folk songs and works by Beethoven,Vivaldi, Saint-Saëns, Rakhmaninov, and Gershwin.


A Message from Earth(2008):
The message was sent using the same temescpe that sended the teen-age message. The signal will reach the planet "Gliese 581 c" which is  a planet orbiting the red dwarf Gliese 581 the 89th closest star to the Sun in 2029. More than half a million people participated in this project, which was the world's first time content was selected by the public.