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The Northern Lights are most visible near the Arctic Circle, but during times of high solar activity, they can stretch far beyond their usual range. Different gases and altitudes produce different ...

This adorable solar garden light gnome is great for gardens ... smoothly flickers in a pattern of rainbow colors when in color-changing mode. Use the innovative design to set the mood as a ...

The U.S. National Science Foundation Daniel K. Inouye Solar Telescope, the world's most powerful solar telescope, operated by ...