According to my calculations, it should be possible to photograph the curvature of the Earth from an airplane, but it's tricky to pull it off in practice. So I'm calling on the internet to crowdsource the experiment--especially my fellow astronomers flying to AAS. Take a photo of the horizon and measure the curvature, then leave a comment or contact me to build up the sample size. Curvature calculator: https://alexrhowe.github.io/ScienceMeetsFiction/roundearth.html Email: sciemeetsfiction (at) gmail.com Twitter @scimeetsfiction