Unofficial Quizzes for Bing Users
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The Moon is one of the most familiar sights in the sky, and one of the most misunderstood. This Bing moon quiz walks you through 15 observation-style questions, from moonwalkers and moonquakes to the real reason an eclipsed Moon turns red. Every question comes with a hint and a clear explanation, so you finish knowing more than when you started.
The Moon is a regular guest on the Bing homepage. A supermoon, a lunar eclipse or the anniversary of a landing can all put it in the spotlight, and when that happens, moon trivia tends to follow. This Bing moon quiz is an independent practice set built for exactly that moment: a single page of moon questions you can take in a few minutes, with the reasoning behind every answer.
It's also well timed. October's full Moon, the Hunter's Moon, reaches full phase on Monday, October 26, 2026, at 04:12 UTC. That's 12:12 a.m. EDT in New York and 12:12 p.m. in Manila, and the Moon will look full to the naked eye for roughly a day on either side. Take the quiz now and you'll know exactly what you're looking at when it rises.
A quick note on honesty: this quiz isn't made by Microsoft and doesn't award Microsoft Rewards points. It's here to sharpen your knowledge so the official quizzes feel easier.
There's no timer and no sign-up. Each question is an "observation," and the Moon in the score meter grows from a thin crescent toward full with every correct answer.
Moonlight makes the trip to your eyes in a little over one second.
The Moon does turn. It just turns at a very particular speed.
It's a little longer than the time the Moon needs to circle Earth once.
Think about why Apollo astronauts bounced instead of walking.
The landing site's name suggests a calm, peaceful place.
Six successful landings, and each one put a pair of astronauts on the surface.
Early astronomers guessed wrong, and their mistaken name stuck.
Picture a very big crash about 4.5 billion years ago.
It happened in January 2019 and carried a rover called Yutu-2.
In a sense, you're seeing all of Earth's sunrises and sunsets at once.
It's tied to an astronomical event, not to a fixed month.
Scientists measure it by bouncing lasers off mirrors that astronauts left behind.
Look for the spots that never see the Sun at all.
Leonardo da Vinci worked this out about 500 years ago.
He commanded the final Apollo landing in December 1972.
Finished, or just want to check one? The full answer key is tucked below so it won't spoil anything for readers still playing.
Quiz writers love numbers, and they love even more to put two similar numbers side by side. Keep this table handy and the trickiest moon questions get a lot easier.
| Measure | Value | Why it matters for quizzes |
|---|---|---|
| Average distance | 384,400 km (238,900 mi) | Often paired with the Sun's 93 million miles as a decoy |
| Diameter | 3,475 km (2,159 mi) | About 27% of Earth's width |
| Surface gravity | 1.62 m/s² | Roughly one-sixth of Earth's |
| One orbit (sidereal) | 27.3 days | Also the length of one rotation, thanks to tidal locking |
| Phase cycle (synodic) | 29.5 days | The basis of "month" in many calendars |
| Surface temperature | About 120°C by day to −130°C at night | No air to hold heat, so swings are extreme |
| Age | About 4.5 billion years | Linked to the giant-impact theory |
| Apollo samples | 382 kg (842 lb) of rock and soil | Returned by six landing missions |
| Size ranking | 5th-largest moon in the solar system | Behind Ganymede, Titan, Callisto and Io |
| Drift rate | About 3.8 cm per year | Measured with lunar laser ranging |
The Moon doesn't make its own light. Phases are simply how much of its sunlit half we can see from Earth as it travels around us. "Waxing" means the lit part is growing; "waning" means it's shrinking.
Moon names make perfect quiz fodder because they sound mysterious but follow simple rules. These six come up again and again.
The full moon nearest the autumn equinox. It rises soon after sunset several nights in a row, which once gave farmers extra light for gathering crops.
The full moon right after the Harvest Moon. In 2026 it peaks on October 26, a fitting name for the season of preparing for winter.
Today it usually means the second full moon in one calendar month. An older definition is the third full moon in a season that has four. Either way, it isn't actually blue.
A full moon that happens near perigee, the closest point in the Moon's orbit. It can look up to about 14% larger and 30% brighter than a full moon at its farthest point.
A popular name for a totally eclipsed Moon glowing red-orange. The color comes from sunlight filtered through Earth's atmosphere.
A traditional name for January's full moon, one of the monthly names popularized by almanacs in North America.
Moon trivia rewards a handful of habits more than memorizing hundreds of facts. Here's what works.
Learn the classic decoy pairs. 27.3 vs. 29.5 days, 238,900 miles vs. 93 million miles, 12 moonwalkers vs. 24 Apollo lunar travelers. Most tricky moon questions are built from one of these.
Read the image story. When the Moon shows up in a Bing homepage photo, the caption and "learn more" details usually hint at the angle the quiz will take, whether that's an eclipse, a landing site or a moon name.
Keep an eye on the sky calendar. Full moons, supermoons and eclipses are scheduled years in advance, so a quick look at the month's events tells you what's likely to be featured.
Remember the anniversaries. July 20 marks the Apollo 11 landing and is also International Moon Day, recognized by the United Nations. December 1972 marks the last crewed landing.
Use elimination. If an answer claims the Moon makes its own light, has a permanently dark side or doesn't rotate, you can usually rule it out straight away.
Ready for more? Our daily bing homepage quiz covers whatever topic the homepage is featuring that day, and the bing news quiz puts your knowledge of the latest U.S. and world headlines to the test.
No. It's an independent practice quiz and isn't affiliated with Microsoft. It's designed for people who enjoy the moon-themed questions that appear in Bing's daily quizzes and want to brush up.
No. Only activities completed through Microsoft's own services while signed in to a Microsoft account can count toward Rewards. This quiz is purely for practice and fun.
The Hunter's Moon reaches full phase on Monday, October 26, 2026, at 04:12 UTC (12:12 a.m. EDT, 12:12 p.m. in Manila). The next full moon after that arrives on November 24, 2026.
Not in the sense of a side that never sees sunlight. There is a far side that never faces Earth, because the Moon is tidally locked, but it goes through day and night just like the near side.
No telescope on Earth is sharp enough to make out objects that small. However, NASA's Lunar Reconnaissance Orbiter has photographed the Apollo sites from lunar orbit, showing the descent stages left behind and the tracks astronauts made.