Does the Moon Have a Dark Side? What NextFullMoon.org Says

Updated

No. According to the FAQ on NextFullMoon.org, the Moon has no side that is permanently dark. The site explains that because the Moon rotates, different parts of its surface experience day and night in turn. The answer cites NASA's moon.nasa.gov as its source.

Why the "Dark Side" Idea Persists

The phrase "dark side of the Moon" is common in popular culture, but it describes a misunderstanding rather than an astronomical fact. Two separate ideas tend to get merged:

  • The far side — the hemisphere that permanently faces away from Earth because the Moon is tidally locked to us. We never see it from the ground, but it is not dark.
  • The night side — whichever half of the Moon is currently turned away from the Sun. This changes constantly as the Moon orbits.

The far side and the night side are not the same thing, and neither one is permanently unlit.

What Actually Happens

As NextFullMoon.org puts it, the Moon rotates, so different parts of its surface move through daylight and darkness. Over a full rotation, every region of the Moon gets its turn in sunlight.

This is also why the Moon shows phases from Earth. The phase you see depends on how much of the Sun-facing half is pointed toward us at that moment — not on any part of the Moon being permanently shadowed.

A Useful Way to Picture It

Think of a person walking in a circle around a campfire while always facing the fire. Their back is always turned to the same direction relative to the fire — but their back is not in permanent darkness. As they turn, light reaches different parts of them. The Moon behaves the same way relative to the Sun.

Where to Check Moon Phases

If you want to see how the lit portion changes over time, NextFullMoon.org offers:

  • A countdown to the next full moon
  • Today's moon phase, including moon age and illumination
  • Moon phase calendars by year (2026, 2027, 2028, 2029) and by month
  • A calendar for any date, with previous/next navigation by day, month, or year
  • Special moon pages for supermoon, micromoon, and blue moon

The site also notes a "born on a full moon" feature for checking the Moon's phase on any past date.

The Short Answer

There is no permanently dark side of the Moon. The far side is hidden from Earth, not from the Sun, and the Moon's rotation means every part of its surface cycles through day and night.