USAAAO 2015, Пробен кръг — Задача 15

USAAAO Practice Round 2015

Бележка

This round consists of 20 multiple-choice problems to be completed in 50 minutes. You may only use a scientific calculator and a table of constants during the test.

Условие

Which of the following Messier objects is grouped incorrectly with its type and constellation?

a. M4, globular cluster, Scorpius

b. M27, spiral galaxy, Sagittarius

c. M42, emission nebula, Orion

d. M57, planetary nebula, Lyra

e. M87, elliptical galaxy, Virgo

Отговори

Решение

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Оригинал в Архива: 2015-practice-round-exam.pdf · официални решения: 2015-practice-round-solutions.pdf