Video: Proba-2 watches Mercury transit

ESA’s Proba-2 had a ring-side seat for the transit of Mercury on 11 November 2019. Proba-2 monitors the sun from Earth orbit and was able to spot Mercury’s transit as a small black disc—seen here moving from left to right across the face of the sun.

Source:
https://phys.org/news/2019-11-video-proba-mercury-transit.html