Sky to Space
Astronomy Beyond the Basics with Comparisons, Ratios and Proportions
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Eclipses: recommended websites and sources for eclipse glasses

Eclipses

View eclipses safely, enjoy them, understand them!
Each link below opens in a new window.

Note to parents and teachers: I have not put any links to YouTube or Wikipedia on this page.


The lunar eclipses of January 31, 2018 and January 20-21, 2019

A concise and informative update on the January 2018 lunar eclipse is available at Sky and Telescope

The commercial site timeanddate.com has interactive animations and details customized for your location.


Solar viewing glasses: where to get them

Note: you do not need glasses to view a lunar eclipse (such as the ones on January 31, 2018 and January 20-21, 2019. You do need them to view solar eclipses. Safe solar viewing "glasses," with solar filters in cardboard frames, are available and cheap from many sources, for example: American Paper Optics, Thousand Oaks OpticalRainbow Symphony, and probably from a planetarium, science center or public library near you. (Here's the one where I work!)


The American Astronomical Society's eclipse page

Now updated to prepare for the annular solar eclipse on October 14, 2023 and the total solar eclipse on April 8, 2024, here is a neatly organized page of reliable information from experts, with many links. 


Eclipsewise.com

Details on the dates, times, and regions of visibility for every solar and lunar eclipse from centuries in the past to centuries in the future. Astronomer Fred Espenak did the eclipse calculations for NASA before he retired. Now he's still presenting eclipse data here.


Greatamericaneclipse.com

This site, directed by geographer Michael Zeiler, offers many beautiful maps and eclipse-related products including safe solar viewing glasses. It was mostly concerned with the August 21, 2017 solar eclipse, but also includes items related to the solar eclipse of April 8, 2024.