The Celestial Message in a Bottle

TL;DR

NASA sends twin probes, Voyager 1 and Voyager 2, into space in 1977, each carrying a golden record with sights, sounds, and greetings from Earth.

Transcript

Imagine for a moment that it’s 40,000 years in the future in a solar system far, far, away on a planet thriving with intelligent life. Extraterrestrial beings inhabit this place. Perhaps they look like the cuddly ET, the blob, ALF, or maybe even like the dreadlocked beings from Predator; but either way, they are not human. An approaching speck in s... Read More

Key Insights

• 🚀 The Voyager probes, launched in 1977, carry a golden record with a message intended for potential extraterrestrial civilizations.
• 👂 The golden record includes images, greetings in multiple languages, sounds of Earth, and a selection of music to represent Earth's culture and life.
• 🤞 The inclusion of a message on the Voyager probes reflects the possibility of contact with intelligent extraterrestrial life and the hope for interstellar communication.

Questions & Answers

Q: Why did NASA include a message on the Voyager probes for extraterrestrial civilizations?

NASA included a message on the Voyager probes as a contingency plan, in case they were ever encountered by intelligent extraterrestrial life in the future, beyond our solar system. It was an opportunity to showcase Earth's culture and life.

Q: How did Carl Sagan and his team select the content for the golden record?

Carl Sagan and his team carefully selected 115 images, greetings in 55 languages, sounds of Earth, and a variety of music to represent different aspects of Earth's culture and life. The content aimed to be diverse, inclusive, and easily understandable by extraterrestrial beings.

Q: What technology did Sagan and his team choose for storing the message?

Sagan's team chose to use a phonographic record, made of copper and coated in gold, to store the message. This technology was considered durable and simple to play, with the potential to last for hundreds of millions of years.

Q: How far have the Voyager probes traveled since their launch?

As of July 29, 2019, Voyager 1 is 145.87 astronomical units (AU) away from Earth, officially in interstellar space. Voyager 2 is also in interstellar space but is slightly closer to Earth. Both probes continue to travel further into the cosmos.

Summary & Key Takeaways

• In 1977, NASA launched Voyager 1 and Voyager 2 to explore Jupiter, Saturn, Uranus, and Neptune, as well as potentially leave the solar system.

• Carl Sagan and his team were tasked with creating a message on a golden record to communicate with extraterrestrial civilizations, showcasing Earth's culture and life.

• The golden record included 115 images of Earth, greetings in 55 languages, sounds of Earth, and a selection of music, including Chuck Berry's "Johnny B. Goode."