A total solar eclipse was sweeping across Earth Friday, providing a rare sight for people in the upper Northern Hemisphere.
The eclipse will be visible in parts of Canada, northern Greenland, the Arctic, central Russia, Mongolia, and China. It will move across the planet in a narrow path that begins in Canada's northern territory of Nunavut and ends in northern China's Silk Road region at sunset, according to NASA.
A solar eclipse happens when the moon passes directly between Earth and the sun. When the moon's shadow falls on Earth, people within that shadow see the moon block a portion of the sun's light. 
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CNN's Melissa Gray contributed to this report.
