25/6/23, 20:11 HarvardX SOC1.longx Certificate | edX This is to certify that Alyssa Goodman Robert Wheeler Willson Professor of Applied Astronomy Harvard University Marco Amauril Beckford Arnaez successfully completed and received a passing grade in SOC1.longx: PredictionX: Lost Without Longitude a course of study offered by HarvardX, an online learning initiative of Harvard University. Verified Certificate Issued April 24, 2023 Valid Certificate ID df51e1ed0b1c48878b64de977277788a https://courses.edx.org/certificates/df51e1ed0b1c48878b64de977277788a?_gl=1*1xdu2ce*_ga*MTQ3NTYyMDkyOC4xNjgyMDEwMTkw*_ga_D3KS4KMDT0*MTY4NzczOTEyNi41NS4xLjE2ODc3NDE… 1/1