The new moon cannot be seen because it is positioned between the Earth and the Sun, making it invisible from Earth. During this phase, the side of the moon facing Earth is not illuminated by sunlight, resulting in a dark moon.

The reason for this phenomenon lies in the moon's orbit around the Earth and its position relative to the Sun. The moon orbits the Earth in an elliptical path, and as it does so, it goes through different phases. When the moon is in the new moon phase, it is on the opposite side of the Earth from the Sun. This means that the Sun's light is shining on the side of the moon facing away from Earth, making the moon's illuminated side invisible to us. The moon's phase cycle is approximately 29.5 days long, and the new moon phase occurs every 29.5 days.

Data from NASA's Lunar Reconnaissance Orbiter (LRO) mission, which has been studying the moon since 2009, confirms this phenomenon. The LRO has provided detailed images and data about the moon's surface and its orbit, which show that the new moon phase is indeed a result of the moon's position relative to the Earth and the Sun. Additionally, the LRO has helped scientists better understand the moon's geology and its history, providing further evidence for the visibility of the moon's phases.