The information for the different activities we collected from the main Internet page of ESO, educational package and the astronomic encyclopedia. We took from Internet the photo below, too.

Venus made four contacts.

The way of Venus through the Sun disc and the four “contact”.

I.                   The moment when the Venus disc “touch” the Sun’s disc (“first contant”-C1)

II.                The moment when the Venus’s disc has gone through the Sun’s disc (“second contact”-C2)

III.             The moment when the Venus’s disc for the first time “touch” the other side of the Sun (“third contact”-C3)

IV.            The moment when the Venus crosses the Sun limb (“fourth, last contact”)