ALL ANSWERS · SPACE · DAILY No. 64 · NOVEMBER 6, 2026
Size It Up Space answer: November 6
The five Space silhouettes for November 6, with the true sizes. If you have not played yet, this page is a spoiler — play these five first, then come back to argue with the numbers.
Day 64 ran from Helene (36 km) to TOI-270 b (16,330 km). The widest gap was round 3, Amalthea against Helene, at 4.6×; the closest call was round 1, Io against Ganymede, only 1.4× apart — the kind of round that separates a 90 from a 60.
SPOILER · TODAY’S FIVE
You have not finished today’s puzzle on this device. The answers below are blurred so you can still play first.
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ROUND 1
Io (Jupiter’s moon · mean diameter) vs Ganymede (Jupiter’s moon · mean diameter)
Ganymede · reference · 5,262 km Io · true diameter · 3,643 km 1.4× shorter than Ganymede
Io, a moon of Jupiter, has a mean diameter of about 3,643 km. This is the body’s size, not an orbital distance.
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ROUND 2
Ariel (Uranus’s moon · mean diameter) vs Callisto (Jupiter’s moon · mean diameter)
Callisto · reference · 4,821 km Ariel · true diameter · 1,158 km 4.2× shorter than Callisto
Ariel, a moon of Uranus, has a mean diameter of about 1,157.8 km. This is the body’s size, not an orbital distance.
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ROUND 3
Amalthea (Jupiter’s moon · mean diameter) vs Helene (Saturn’s moon · mean diameter)
Helene · reference · 36 km Amalthea · true diameter · 167 km 4.6× wider than Helene
Amalthea, a moon of Jupiter, has a mean diameter of about 167 km. This is the body’s size, not an orbital distance.
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ROUND 4
TOI-270 b (estimated planetary diameter) vs TRAPPIST-1 h (estimated planetary diameter)
TRAPPIST-1 h · reference · 9,631 km TOI-270 b · true diameter · 16,330 km 1.7× wider than TRAPPIST-1 h
TOI-270 b has an estimated planetary diameter of about 16,327.9 km. This is the body’s size, not an orbital distance.
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ROUND 5
Dione (Saturn’s moon · mean diameter) vs Pluto (mean diameter)
Pluto · reference · 2,377 km Dione · true diameter · 1,123 km 2.1× shorter than Pluto
Dione, a moon of Saturn, has a mean diameter of about 1,122.8 km. This is the body’s size, not an orbital distance.
Beat these tomorrow
Every round is worth up to 100 points: within 6% of the true size scores 100, half or double scores 45, five times off scores zero. The daily puzzle is the same five for everyone and refreshes at midnight in your time zone; if you want more than five, Size It Up Unlimited draws fresh pairs from the whole library for as long as you like.