Now, Listen to Nasa's Introduction to Humans - for Aliens

'Golden Record' is the collection of sounds that Nasa selected to be sent on the Voyager spacecraft that launched in 1977.

The intention was to take impressions of our world right out to the edge of interstellar space. Nasa's Carl Sagan chaired the committee to decide what sounds were included. "The spacecraft will get the record played only if there are advanced spacefaring civilisations in interstellar space," he was quoted as saying.

The intention would have been to introduce the aliens to the life on Earth or "the pale blue dot" as Sagan would call it.

Now, we can easily listen to the sounds on the Golden Record.

They have been on the Web for a while but in poor quality and scattered around, that is why Nasa has finally put high-quality versions online.

SoundCloud enables its users to upload, record, promote, and share their originally-created sounds.

Detailing the contents of the Golden Record on a company page, Nasa says, "The contents of the record were selected for Nasa by a committee chaired by Carl Sagan of Cornell University, et. al. Dr. Sagan and his associates assembled 115 images and a variety of natural sounds, such as those made by surf, wind and thunder, birds, whales, and other animals. To this they added musical selections from different cultures and eras, and spoken greetings from Earth-people in fifty-five languages, and printed messages from President Carter and U.N. Secretary General Waldheim."

The Greetings to the Universe in 55 languages include 10 from India, specifically, Hindi, Bengali, Gujarati, Kannada, Marathi, Oriya, Punjabi, Rajasthani, Telugu, and Urdu. Readers can also hear the Sounds of Earth recordings, which range from chimpanzees to trains, life signs, and the rain.