Tiny Mercury is barely visible against our quiet X-ray Sun as it crosses the solar disk. Back in 2016, Hinode XRT observed a Mercury transit with a very different looking X-ray Sun than how the Sun looks today. Currently, the Sun is in a quiet period with no active regions visible. Whereas in 2016, a large active region bloomed with X-ray loops high into the corona. Unlike visible light, which the Sun steadily emits, the X-ray Sun changes with the solar cycle, making each Mercury transit unique.
Please enjoy the following movies and images of the 2019 Mercury Transit.
Wide field of view movie
Inverse color table movie
XRT full disk image
Keywords: Transit, Full Disk