Launched in 1977, Voyager 1 is cruising through interstellar space—so far out that its radio signals take over 22 hours to reach Earth.
Carrying the famous Golden Record for any potential extraterrestrial listeners, the probe runs on decaying plutonium batteries and less computer memory than a modern key fob.
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Quick Guess: What is the famous audio-visual message disc carried aboard Voyager 1 called?
Verified Answer: The Golden Record
Quiz Question: What is the famous audio-visual message disc carried aboard Voyager 1 called?
Correct Answer: The Golden Record
Carl Sagan and his team curated the Golden Record carrying Earth's sounds and greetings.
Venus spins so slowly on its axis that a single Venusian day lasts longer than its entire orbit around the Sun.
A magnetar's magnetic field is so extreme that even 1,000 kilometers away, spherical electron clouds around atoms are deformed into needle-thin cylinders.
Because Titan has thicker nitrogen air and just 14% of Earth's gravity, giant liquid methane raindrops drift gently downward about 6 times slower than Earth rain.
The bootprints left by Apollo astronauts on the Moon in 1969 remain virtually untouched to this day.