In news that surprises no one, demand for eclipse glasses has spiked, given the attention of the upcoming Great American Eclipse set for August 21, which will run across the continental United States. It will take approximately 94 minutes for the moon's shadow to make the cross country trip.
"It's incredibly exciting and something you should participate in and enjoy, but you should do it safely with the proper filters for your eyes", he stressed. However, in Madison - where a maximum of 85 percent of the sun will be blocked by the moon at about 1:15 p.m. - that won't be an option. The last one visible from anywhere in the United States was on July 11, 1991, when Hawaiian observers saw this phenomenon of the Moon passing directly in front of the Sun.
Eclipse watchers in the 60 to 70-mile wide "path of totality" that will cut through much of the middle USA could briefly look directly at the eclipse without protection when the moon fully covers the sun.
Can we learn anything from eclipse events, or are they really just oddities that happen in nature?
Stand still and cover your eyes with your eclipse glasses or solar viewer before looking up at the bright sun. The outermost layer of the sun, known as the corona, is hard to study because it's less bright than the rest of the sun - so we have trouble seeing it amid the rest of the sun's brightness.
Below: The path of the total eclipse, showing "the Hill" will get a 2/3 eclipse. A valid library card or photo identification must be shown, and there is a limit of one pair of glasses per library account, the library staff said. "I think people will be interested to see how people react to such a long eclipse". First, let's review some basics about this much-anticipated event.
People in the path of the total eclipse can expect twilight-like darkness.
Other prime places to watch the eclipse in Kentucky are Franklin and Scottsville.
In addition to shedding more light on the dynamics of the sun's atmosphere, the images could reveal whether a hypothesized family of asteroids between Mercury and the sun exists. Cheap knock-offs are being sold in stores and online. NASA also released a list of suggested manufacturers and retailers. To make sure you're safe, NASA recommends looking for glasses with the certified ISO 12312-2 safety standard. We've posted a link at publicradioeast.org.
Adler Planetarium Director of Public Observing Michelle Nichols discusses the upcoming total solar eclipse at McHenry County College Tuesday, Aug. 8. During an eclipse, astronomers get an exceptional chance to study the photosphere "just up to a hundred miles from the sun's surface", she said.
Glasses or other solar filters also shouldn't be used if they're scratched or damaged, according to the astronomical society. Reuters reported that the market is being flooded with defective knockoffs, so it's also a good idea to make sure that the brand you purchased is approved by the experts before August 21.