Perspectives: Whenever Mercury passes slowly between the Earth and the sun, (a reletively rare event,) the small planet can be seen as a tiny dot, not visible without a light reducing filter and magnification.
Above –> The sun is about 93 million miles (150 mil. km) away from Earth, and Mercury 67 million miles (108 mil. km) away at this time. It is the tiny dot at the lower left just starting its apparent crossing, called a Transit! What is unique in this image is the smokey jet plane contrail (exhaust) seen in front of the upper part of the sun …about seven miles away.
Above –> 6 1/2 hours later, the transit is ending as the planet, at the 3:00 o’clock position to the right, moves past the sun’s disk. (ZOOM IN TO SEE THIS.)
Thanks for viewing. Comments are always welcome and zoom in for a closer look. M:-)