NASA recorded Mercury’s transit in front of the Sun on May 9.

The image was captured by a NASA solar telescope called the Interface Region Imaging Spectrograph, or IRIS.

The following movie shows a composite of the IRIS imagery, in the inset, and imagery from NASA’s Solar Dynamics Observatory, or SDO, as the golden background.

Credit: IRIS, LMSAL/NASA, Wei Liu and Bart De Pontieu