World News | Rachel Feltman, The Washington Post | Saturday May 7, 2016
It happens around 13 times a century: From our perspective, Mercury - the smallest planet in our solar system - will pass in front of the sun. Most of the world, including the United States, on Monday will be able to see the planet as a tiny black dot passing slowly in front of its host star. You shouldn't stare directly into the sun (ouch), but by...
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