Scientists identified Milwaukee and Washington, D.C., as US cities most vulnerable to space weather due to the connection of their transformers to the network.
The light our eyes can detect is only a sliver of the light out there. The electromagnetic spectrum describes all the wavelengths of light, seen and unseen.
Members of the EarthSky community - including scientists, as well as science and nature writers from across the globe - weigh in on what's important to them.
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