Eclipse terms explained - WSIL-TV 3 Southern Illinois

Eclipse terms explained

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WSIL -- As we get closer to eclipse day, we wanted to explain some of the scientific terms you might have started hearing leading up to the event.

Be aware that you'll need a pair of eclipse glasses to look directly at the sun. 

At First Contact, you'll see the moon just begin to cover up the sun as we enter into a partial solar eclipse. 

Second Contact will occur just when the last bits of light make their way around the moon. The last bright light is called "Diamond". 

Then, just before totality, Bailey's Bead. The sun light squeezing through the peaks and valleys from the moon's topography. 

Then, we enter totality. When you can take off your eclipse glasses and look directly at the sun as it will be completely covered up by the moon. 

Third Contact will occur just as the sun's light reappears from the opposite side of the moon. 

Then, Fourth Contact is when the moon moves away from the sun and the eclipse comes to an end. 

The path tracks right across southern Illinois. Start and end times only vary around one or two minutes, but time of totality will get less and less as you get further away from the center. 

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