How Juneau, Alaska responds to yearly glacier floods

Every year, residents who live near the banks of the Mendenhall River in Juneau, Alaska know that sometime in summer, their streets will flood. At some point, even in the absence of recent rain, the river will rise and overflow ...

NASA's first planetary defense mission target gets a new name

Nearly two decades ago, a near-Earth asteroid was discovered to have a moon and the binary system was given the name "Didymos"—Greek for "twin," a loose description of the larger main body and the smaller orbiting moon, ...

Protecting Earth from asteroid impact with a tethered diversion

Our planet exists within the vicinity of thousands of Near-Earth Objects (NEOs), some of which—potentially hazardous asteroids (PHAs)—carry the risk of impacting Earth and causing major damage to infrastructure and loss ...

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