The moon and Mars will have a spring get-together on Tuesday (April 25) when the two celestial objects make a close approach in the sky. At almost the same time, the two celestial objects will share the same right ascension in the sky, an arrangement called a "conjunction."
During the conjunction, the moon will be six days into its new cycle which began with the April new moon on Wednesday, April 19. This means as it passes within around 3 degrees of Mars, it will appear as a thin arc of light during a phase called the waxing crescent moon. (The prefix "waxing" indicates that light is spreading across the lunar face.)
