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13 minutes of background and findings by the Voyager spacecraft s, at the popular level. Rather well done.
Cheers,
Tom
Cheers,
Tom
The Voyager I and Voyager II missions were launched in 1977 with the purpose of exploring the outer planets of our solar system, including Jupiter, Saturn, Uranus, and Neptune. They also carry a golden record with sounds and images representing Earth, in case they are ever discovered by extraterrestrial life.
As of 2021, Voyager I has traveled over 14.2 billion miles from Earth, while Voyager II has traveled over 11.8 billion miles. They are both currently in interstellar space, beyond the influence of our Sun's magnetic field.
Voyager I and Voyager II are equipped with a variety of instruments, including cameras, spectrometers, magnetometers, and plasma detectors. These instruments allow the spacecrafts to collect data and images of the planets and their moons, as well as the space environment they are traveling through.
Both Voyager I and Voyager II have surpassed their expected lifetimes and are still functioning, over 40 years after their launch. They are powered by radioisotope thermoelectric generators, which convert heat from the decay of radioactive material into electricity. It is estimated that they will continue to function until at least 2025.
The Voyager missions have provided us with a wealth of information about the outer planets, their moons, and the space environment beyond our solar system. They have discovered new moons, volcanoes on Io, and evidence of a subsurface ocean on Europa. They have also given us a better understanding of the magnetic fields and radiation in our solar system.