The Van Allen probe's mission was meant to last two years, but ended up going for nearly seven.
Add Yahoo as a preferred source to see more of our stories on Google. Billboard Hot 100 re-entries are a relatively common occurrence, as songs often experience sudden gains in activity that help them ...
A 1,323-pound NASA satellite that once studied how the Van Allen radiation belts protect the planet from cosmic radiation and space weather is expected to re-enter Earth's atmosphere Tuesday at ...
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