At approximately 10:30 EST tonight, the Juno spacecraft will enter the orbit of the largest planet in our solar system, Jupiter. Juno has been traveling there at 60,000mph for 5 years. When she enters Jupiters orbit she will be moving at a speed of 165,000mph; faster than any device made by humans in history. To put this into perspective, a bullet speeds through the air at about 1,700mph. When Juno enters orbit, she’ll encounter more radiation than any technology we’ve ever built. Background radiation on earth is about .39RAD. In orbit around Jupiter it is about 20,000,000RAD. You can listen to a hint of this hellish nimbus here.
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