The link you provided about Mercury in that post clearly and succinctly states otherwise. From the site:
" It is now known that Mercury rotates three times in two of its years."
Do you not read the material at the links you post,/QUOTE]
I read it, but don't you yourself read it carefully:
"
Until 1962 it was thought that Mercury's "day" was the same length as its "year" so as to keep that same face to the Sun much as the Moon does to the Earth. But this was shown to be false in 1965 by doppler radar observations. It is now known that Mercury rotates three times in two of its years."
Therefore, in the past they thought its day equals its year, but now they see "it spins three times in two of its years"
So they were wrong (as do they think now), but now they think it another way; why couldn't they be wrong now also?
And you defend everything they say: in the past they said: its day equals its year, and you believed that without hesitation, and now they say it in another way, and you also believe it; how can that be any scientific sense ?
the reason for the rotation of the earth around itself