Keiristin Hill was excited to find solar eclipse glasses at Fernbank Science Center.  Mercury is scheduled to put on a show Monday.

Mercury putting on rare show Monday, parading across the sun

Here’s how you can watch the planetary show in Atlanta, Georgia

The solar system's smallest, innermost planet will resemble a tiny black dot Monday as it passes directly between Earth and the sun. It begins at 7:35 a.m. EST.

The entire 5 ½-hour event will be visible, weather permitting, in the eastern U.S. and Canada, and all of Central and South America. The rest of North America, Europe and Africa will catch part of the action. Asia and Australia will miss out.

In this composite image provided by NASA, Mercury passes directly between the sun and Earth on May 9, 2016, in a transit which lasted 7.5 hours. On Monday, Mercury will make another transit, visible from the eastern U.S. and Canada, and all of Central and South America.
Photo: NASA's Goddard Space Flight Center/SDO/Genna Duberstein via AP

Fernbank Science Center in Atlanta is streaming the event on its website. 

Unlike its 2016 transit, Mercury will score a near bull's-eye this time, passing practically dead center in front of our star.

Mercury's next transit isn't until 2032, and North America won't get another viewing opportunity until 2049. Earthlings get treated to 13 or 14 Mercury transits a century.

You'll need proper eye protection for Monday's spectacle: Telescopes or binoculars with solar filters are recommended. There's no harm in pulling out the eclipse glasses from the total solar eclipse across the U.S. two years ago, but it would take "exceptional vision" to spot minuscule Mercury, said NASA solar astrophysicist Alex Young.

Mercury's next transit isn't until 2032, and North America won't get another viewing opportunity until 2049.

Mercury is 3,000 miles in diameter, compared with the sun's 864,000 miles (1.4 million kilometers.)

During its 2012 transit of the sun, larger and closer Venus was barely detectable by Young with his solar-viewing glasses.

"That's really close to the limit of what you can see," he said earlier this week. "So Mercury's going to probably be too small."

Venus transits are much rarer. The next one isn't until 2117.

The Fernbank Science Center plans to stream Monday’s spectacle on its website.

Mercury will cut a diagonal path left to right across the sun Monday, entering around the 8 o’clock mark and exiting around the 2 o'clock point.

Although the trek will appear slow, Mercury will zoom across the sun at roughly 150,000 mph.

NASA will broadcast the transit as seen from the orbiting Solar Dynamics Observatory, with only a brief lag. Scientists will use the transit to fine-tune telescopes, especially those in space that cannot be adjusted by hand, according to Young.

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