A super blue moon is a rare full moon that is both a supermoon and a blue moon at the same time.

Quick Scoop: The Basics

  • A supermoon is a full moon that happens when the Moon is at or very near its closest point to Earth in its orbit (perigee), so it looks slightly larger and brighter than usual.
  • A blue moon is a “bonus” full moon: either the second full moon in a single calendar month or the third full moon in a season that has four full moons instead of the usual three.
  • Put together, a super blue moon is a full moon that is both unusually close to Earth and counts as one of these extra full moons.

Despite the name, the Moon does not actually look blue; the term “blue moon” is about timing, not color.

Why It’s Special (and Rare)

  • Supermoons happen a few times a year because the Moon’s orbit is elliptical and sometimes brings it closer to Earth, making it up to about 14% larger and around 30% brighter compared to when it’s farthest.
  • Blue moons (by either definition) occur roughly every two to three years, so combining a blue moon with a supermoon is unusual and won’t happen often.
  • Some recent coverage notes that specific super blue moons may not repeat again until well into the 2030s, underscoring how “headline-worthy” they are.

How People Talk About It Online

On news sites and forums, a super blue moon is often hyped as a “once in a decade” sky show, even though the size difference is subtle to the naked eye. People share photos, plan night walks or stargazing meetups, and debate whether you can really see it as bigger without a side‑by‑side comparison.

You’ll also see some confusion over names—“super blue moon,” “blue supermoon,” or just “rare full moon”—but they all generally refer to that same combination of a supermoon and a blue moon.

TL;DR: A super blue moon is a rare full moon that’s both closer and brighter than usual (a supermoon) and also counts as an extra, out‑of‑schedule full moon (a blue moon), even though it doesn’t actually look blue.

Information gathered from public forums or data available on the internet and portrayed here.