The phase of the Moon when the Sun and Moon have the same right ascension is
A) new Moon.
B) first quarter.
C) gibbous.
D) full Moon.

Question

Quizplus · Accepted Answer

The new Moon phase occurs when the Moon is located directly between the Earth and the Sun, meaning they have the same right ascension. This alignment causes the side of the Moon facing Earth to be in shadow, making it invisible to observers on Earth.

The Phase of the Moon When the Sun and Moon