During a total solar eclipse, the moon and sun seem to be about the same size.
According to NASA, this is a "heavenly coincidence," as the Sun is about 400 times wider than the Moon and about 400 times farther away. Moon blocks the entire surface of the Sun and produces a total eclipse.
The umbrella – the area where the sun is completely covered by the moon ̵
Depending on where you are, the spectacle could take up to four minutes and three seconds, the space agency said.
The total solar eclipse will appear at 4:38 pm over the city of La Serena in Chile in the sky, Eastern Time and travel across the Andes before ending at 4:44 pm near Buenos Aires, Argentina. ET.
To see "totality" in which the moon completely blocks the sun, you must be within the narrow swath – about 70 miles wide – of the lunar shadow.
Outside this Path, A partial eclipse will be visible in Argentina and Chile, as well as in Ecuador, Peru, Bolivia, Paraguay, Uruguay and parts of Colombia, Brazil, Venezuela and Panama, according to NASA.
Experience a total solar eclipse in which you live happens approximately once in 375 years, the agency said, and the South American continent will have its next visible total solar eclipse on December 14, 2020.
If you want to get the best view of the eclipse, you can join the astronomer Glenn Schneider on a charter flight that follows the eclipse path from an airplane, extending the total length to about 8 to 9 minutes.
CNN Judson Jones has contributed to this report.