What messages have we sent to aliens? - Deepstash
Introduction to Web 3.0

Learn more about personaldevelopment with this collection

The differences between Web 2.0 and Web 3.0

The future of the internet

Understanding the potential of Web 3.0

Introduction to Web 3.0

Discover 36 similar ideas in

It takes just

6 mins to read

Contacting alien civilizations

Contacting alien civilizations

Austrian astronomer Joseph Johann Von Littrow proposed early in the 19th century that people should send a message to alien civilizations to let them know we are here.

He proposed to dig trenches configured in large geometric patterns in the Sahara Desert, fill them with kerosene and light them. His idea never came to fruition, but we haven't stopped our attempts to contact extraterrestrial life.


172 reads

Signals sent in the past

In 1962, the Soviet scientists directed a radio transmitter at Venus and saluted the planet in Morse code. The message was a test run for a new planetary radar to map objects in the solar system.

In 1974, a group of scientists transmitted a radio message toward Messier 13, a cluster of stars about 25,000 light-years away. The image was sent in binary code and depicted a human stick figure, a double-helix DNA structure, a carbon atom model, and a diagram of a telescope.


110 reads

Spacecraft carrying artefacts

Spacecraft containing artefacts have also been launched from Earth, hoping intelligent life-forms will eventually find them.

Voyagers 1 and 2 were launched in 1977 and carried a Golden Record containing music, ambient sounds from Earth and 116 images of our planet and solar system.


106 reads

The likelihood of success

The likelihood that any of the attempts to make contact with aliens will reach their intended targets are low.

It contains too many assumptions, such as that if aliens exist, they hear and see the same way we do. Then they have to listen for radio signals and understand enough maths and science to interpret our messages.


162 reads



Gamer. Doh! Reading on my phione and sharing some

Read & Learn

20x Faster





Access to 200,000+ ideas

Access to the mobile app

Unlimited idea saving & library

Unlimited history

Unlimited listening to ideas

Downloading & offline access

Personalized recommendations

Supercharge your mind with one idea per day

Enter your email and spend 1 minute every day to learn something new.


I agree to receive email updates