A heavy space probe is falling to Earth today (March 10), eight years earlier than expected, according to NASA.
The 1,300-pound (600 kilograms) Van Allen Probe A should mostly burn up as it enters Earth's atmosphere, but some components are expected to remain intact. The spacecraft poses a low risk to humans, with a 1-in-4,200 chance of it causing harm, NASA said in a statement released Monday (March 9).
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