Mercury comes into view

Orion402

https://sol24.net/data/html/SOHO/C3/96H/VIDEO/

https://www.theplanetstoday.com/

By scrolling the dates forward, Mercury is seen moving from right to left and behind the Sun as seen from a slower moving Earth so is now coming within range of the C3 camera.

The planet shows us its full light hemisphere, so is particularly dazzling whereas when it passes between the Earth and the central Sun it is dark and barely discernible against the change in position of the background stars.

https://www.youtube.com/watch?v=PhO6Ufw9h_s

Orion402

Mercury is currently passing between the slower moving Earth and the stationary Sun as the satellite peers towards the inner solar system-

https://sol24.net/data/html/SOHO/C3/96H/VIDEO/

Unlike a stationary field of background stars, the change in the position of the stars relative to the central foreground Sun is in response to the Earth's orbital motion. As Mercury moves faster, its motion can easily be spotted insofar as the background stars move in unison from left to right while Mercury is set off as a faster change from left to right when in retrograde motion.

Orion402

https://sol24.net/data/html/SOHO/C3/96H/VIDEO/

Venus is presently passing behind the Sun and on the opposite side of the solar system as seen from a satellite tracking with the Earth around the Sun-

https://www.theplanetstoday.com/

Venus is showing its bright hemisphere to us so will show a constant brightness whereas when it passes between the Earth and the central Sun it shows more and more of its dark hemisphere to us-

https://www.youtube.com/watch?v=w2uCtot1aDg

The major innovation is the demonstration that the Earth moves using the change in the position of the background stars from left to right of the Sun. If observers can't affirm this demonstration to themselves then nothing else will make sense.