The bullet-like impact of a single grain of sand in deep space
In short: Voyager 1 travels at 10.5 miles per second, turning microscopic dust into plasma and large grains into high-energy projectiles. This video explores the physics of these impacts and why the spacecraft has survived nearly five decades without any shielding.
The video calculates the kinetic energy of interstellar dust hitting Voyager 1. While microscopic particles vaporize on impact, a grain of sand carries energy comparable to a bullet. Despite this risk, the probe remains functional because it navigates an environment with almost no weather, oxygen, or thermal cycling to cause structural decay.
The analysis looks ahead at Voyager's journey into the Oort Cloud and identifies what is most likely to end its mission. Interestingly, while its signal will eventually fade, the physical hardware—including the Golden Record—could potentially remain intact for billions of years.
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Sources
- Summary by Intellect · source: What One Hit From a Grain of Sand Will Do To Voyager 1
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