In general, it was in the 5th or 6th grade in the lesson of natural science. There was a theme about the solar system, or more precisely about Mars, and the teacher said about this "when the astronauts took samples of Martian soil, they found iron in it and therefore Mars is red." I objected, and when people managed to visit Mars. A dispute began and nobody wanted to give in, but the lesson ended and the dispute too, I thought so. The following week there was a test thesis in which she included the question of whether humans were literally on Mars, and the yes/no answers, while the other questions implicated the answers a, b, c, d. I told my classmates to answer no, and she lowered everyone’s score. And I still don’t understand how that is at all.