2018 Space and Science Festival, May 5, 2018. Original public domain image from Flickr https://www.rawpixel.com/image/8733954/photo-image-public-domain-children-glassesFree Image from public domain licenseScenes from the August 21, 2017 eclipse in Mammoth Hot Springs ecby Neal Herbert. Original public domain image from Flickr https://www.rawpixel.com/image/4225784/photo-image-public-domain-people-womanFree Image from public domain licenseThe crucifixion of Christ. Line engraving by J. Neeffs after P.P. Rubens, 16--. https://www.rawpixel.com/image/13955427/the-crucifixion-christ-line-engraving-neeffs-after-pp-rubens-16Free Image from public domain license