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A total solar eclipse stretched across South America on Tuesday. Just after 4:30 p.m. ET, viewers of a livestream and in parts of Chile and Argentina witnessed a stunning transformation of the sky as day turned to night and the moon progressively blocked the sun.
Here’s what it looked like:
The sun flares behind the moon in today's solar eclipse, seen from the La Silla European Southern Observatory in Chile. 
The solar eclipse begins. 
Pictured is the solar eclipse as seen from the La Silla European Southern Observatory. 
Seen is a view from La Silla as the sun peeks out from around the moon. 
The solar eclipse progresses. 
A tourist tries special glasses at Chile's La Silla European Southern Observatory ahead of the eclipse. 
A man takes pictures of a total solar eclipse in Chascomus, Argentina.
