Here is a concise summary of the provided transcript:
**Title:** Decoding the Voyager Golden Records
**Summary:**
* In 1977, NASA launched Voyager 1 & 2 with Golden Records containing audio and images from Earth.
* The records' covers feature symbols explaining how to play and decode the content.
* To decode images, NASA encoded them within audio waveforms, using a hydrogen atom's hyper-fine transition (21 cm wavelength) as a constant.
* By converting binary numbers on the cover, using this constant, and applying old TV technology principles, images can be rendered.
* A coder created a script to automate this process, successfully decoding the images 40 years later.
* The project showcases human ingenuity, with the record serving as a "high water mark of our civilization" for potential extraterrestrial discoverers.
Here are the key facts extracted from the text, numbered and in short sentences:
1. **1977**: NASA sent two golden records into space aboard the Voyager One and Two spacecraft.
2. **Spacecraft Distance**: The Voyager probes are among the farthest-reaching objects launched by humanity.
3. **Communication Cessation**: By 2030, both Voyager One and Two will cease communications with Earth.
4. **Spacecraft Speed**: The Voyager spacecraft will continue to travel through space at almost 60,000 kilometers per hour.
5. **Record Contents**: The golden records contain audio and images from Earth.
6. **Record Format**: The golden record is a real, functioning LP (not a digital disc).
7. **Record Playback**: To play, the record requires correct rotation and speed (approximately 3.59 seconds per rotation).
8. **Total Record Time**: The total run time of the record is approximately 53.82 minutes (3229 seconds).
9. **Image Encoding**: Images are encoded within the audio waveforms themselves due to limited data capacity (Voyager's computer systems were only 69 kilobytes).
10. **Hydrogen Atom Symbolism**: The hydrogen atom depicted on the cover undergoes a hyper-fine transition, emitting a 21 centimeter wavelength (1420 megahertz).
11. **Constant Reference**: The 1420 megahertz signal is used as a constant for other symbols on the record.
12. **Image Decoding Process**:
* Waveform data is broken into sections (.008 seconds each).
* Each section completes one of 512 scan lines that make up an image.
13. **Calibration Circle**: A circle on the record's cover serves as a calibration point for decoding images.
14. **Number of Images**: There are a total of 115 images encoded on the golden record.
15. **Decoding Success**: With the help of various experts and coding, the images on the golden record were successfully decoded 40 years after its creation.