USAAAO 2022, I кръг — Задача 26
USAAAO 2022 - First Round · 5 февруари 2022 г.
Условие
Knowing that the following image was taken at at 11:59pm, determine the name of which constellation was the sun passing in front of in that same day.
(a) Scorpius
(b) Virgo
(c) Big Dipper
(d) Cancer
(e) Taurus
Отговори
- D
Решение
Looking at the constellations present in the image, we see that Scorpius, Sagittarius, Libra, Capricornus, Aquarius, and Pisces are above the horizon. Another important detail is that the constellations on the ecliptic that are closer to the center of the image are both Capricornus and Sagittarius.
Now looking at the ecliptic constellations, we see that that only opposite constellations to Capricornus and Sagittarius is either Cancer or Gemini. As Gemini is not in the options, Cancer would be the right answer.
Answer: D
Оригинал в Архива: usaaao_first_exam_2022_problems.pdf · официални решения: usaaao_first_exam_2022_solutions-1.pdf