August 21st Solar Eclipse

NASA image of partial solar eclipseOn August 21st, 2017, the Moon passed in front of the Sun as seen from much of North America, in an event that was hailed as a Great American Eclipse. (Another contender for that title will occur on April 8, 2024, in case you missed this one!) While a total eclipse was visible from within a narrow band stretching from Oregon to South Carolina, Maryland experienced a partial solar eclipse. In Maryland, approximately 80% of the solar surface was obstructed at the maximum, which occurred at approximately 2:43 pm local time. For any partial solar eclipse, please note: It is not safe to observe a partial solar eclipse without special equipment and/or eye protection — regular sunglasses are not okay!

For information about viewing a solar eclipse safely, please visit NASA’s Eclipse 101 Safety. Key takeaway: if you are trying to observe a partial eclipse, you need special eclipse glasses from a reputable manufacturer. Here is a rundown of information from the American Astronomical Society on solar filters and viewers and how to make sure you get something that is safe to use.

NASA graphic on safely observing phases of a solar eclipse

Baltimore residents had a chance to view the eclipse on “The Beach” at JHU’s Homewood Campus. Here is a news item about that event:

For more information about the August 21, 2017 solar eclipse, visit NASA’s Eclipse2017.

To all eclipse watchers, we wish you clear skies!