It's the last day of the lunar cycle, a roughly 29.5-day period in which the Moon orbits Earth, which means today is the New Moon. This is the point where the Moon sits between Earth and the Sun, so its sunlit side is facing away from us.
What is today’s Moon phase?
As of Friday, April 17, the Moon phase is New Moon. Tonight, 0% of the moon will be lit up, according to NASA's Daily Moon Guide.
Unsurprisingly, with 0% of the moon illuminated, there's nothing for us to see tonight.
When is the next Full Moon?
The next Full Moon is predicted to take place on May 1, the first of two in May.
What are Moon phases?
NASA states that the Moon takes about 29.5 days to orbit Earth, during which it passes through eight distinct phases. We always see the same side of the Moon, but the amount of sunlight reflecting off it changes as it moves along its orbit, creating the familiar pattern of full, partial, and crescent shapes. These shifting appearances are called lunar phases, and there are eight in total:
New Moon - The Moon is between Earth and the sun, so the side we see is dark (in other words, it's invisible to the eye).
Waxing Crescent - A small sliver of light appears on the right side (Northern Hemisphere).
First Quarter - Half of the Moon is lit on the right side. It looks like a half-Moon.
Waxing Gibbous - More than half is lit up, but it’s not quite full yet.
Full Moon - The whole face of the Moon is illuminated and fully visible.
Waning Gibbous - The Moon starts losing light on the right side. (Northern Hemisphere)
Third Quarter (or Last Quarter) - Another half-Moon, but now the left side is lit.
Waning Crescent - A thin sliver of light remains on the left side before going dark again.