After "Arecibo", 50 years...Korean Letters to Aliens

[Anchor]
It's been 50 years since humans first sent messages to alien life.

While there is no reply yet, Korea also sent its first Korean letter into space.

I'm reporter Jang A-young.

[Reporter]
In 1974, the first letter written by astronomer Frank Drake on extraterrestrial intelligence, the Arecibo message.

1 to 10 numbers, human figures, and the solar system in 1,679 binary digits
Twenty-five thousand light-years away, which we thought was most likely to have life at the time of
, we sent it to Messiah 13, where the stars were packed.

Over the years, the Arecibo Observatory, which sent this message, has collapsed, but there is still no reply from outer space.

[Open Space Explained Video: Arecibo Message still needs to travel longer in vast space. It will take another 25,000 years for the answer, but the Arecibo message symbolizes our willingness to connect and explore beyond what is known.

Celebrating the 50th anniversary of Arecibo's message, Korean artists and astronomers sent the first Korean letter to an alien.

From words such as space, stars, love, and loneliness to sentences such as 'we alone in space are lonely'.

[Won Jong-guk / Author 'Unhappy' : It's about explaining words with pictures. It's like constructing information as if you were explaining a word to a child.]

Fifty years ago, messages were sent by radio waves, but advances in science have made it possible to send video messages by laser.

[Kang Won-seok / Space Beam Executive Director: It's a device that can quickly transmit the video made by Unhappy into space in real time without loss.]

The number of destinations has increased to seven.

Exoplanets with rocks and water that we didn't even know existed 50 years ago, with a high potential for life,
It included the star Baekdu and the exoplanet Halla, which were discovered by Koreans and named in Korean.

I'm YTN's Jang Ayoung.

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video; Electron
Screen provided; Open Space, Central Science Museum