“A black moon (or new moon) is when the moon is basically in between the Earth and the sun, not to make an eclipse, but where we don’t see the moon,” said Noah Petro, chief of NASA’s Planetary, Geolo...

According to Dr. Shannon Schmoll, manager of Michigan State University's Abrams Planetarium, a black moon is essentially the same as a blue moon, but for new moons instead of full moons.