ALL ANSWERS · SPACE · DAILY No. 58 · OCTOBER 31, 2026
Size It Up Space answer: October 31
The five Space silhouettes for October 31, 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 58 ran from Io (3,643 km) to TOI-700 (585,800 km). The widest gap was round 1, Io against TRAPPIST-1 d, at 2.8×; the closest call was round 5, TOI-700 e against LHS 1140 b, only 1.9× 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 TRAPPIST-1 d (estimated planetary diameter)
TRAPPIST-1 d · reference · 10,050 km Io · true diameter · 3,643 km 2.8× shorter than TRAPPIST-1 d
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
TOI-700 (estimated stellar diameter) vs LHS 1140 (estimated stellar diameter)
LHS 1140 · reference · 300,400 km TOI-700 · true diameter · 585,800 km 1.9× wider than LHS 1140
TOI-700 has an estimated stellar diameter of about 585,779.4 km. This is the body’s size, not an orbital distance.
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ROUND 3
GJ 3470 b (estimated planetary diameter) vs Jupiter (mean diameter)
Jupiter · reference · 139,800 km GJ 3470 b · true diameter · 58,300 km 2.4× shorter than Jupiter
GJ 3470 b has an estimated planetary diameter of about 58,295.8 km. This is the body’s size, not an orbital distance.
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ROUND 4
Kepler-22 b (estimated planetary diameter) vs TRAPPIST-1 f (estimated planetary diameter)
TRAPPIST-1 f · reference · 13,330 km Kepler-22 b · true diameter · 26,790 km 2.0× wider than TRAPPIST-1 f
Kepler-22 b has an estimated planetary diameter of about 26,788 km. This is the body’s size, not an orbital distance.
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ROUND 5
TOI-700 e (estimated planetary diameter) vs LHS 1140 b (estimated planetary diameter)
LHS 1140 b · reference · 22,070 km TOI-700 e · true diameter · 11,720 km 1.9× shorter than LHS 1140 b
TOI-700 e has an estimated planetary diameter of about 11,722.9 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.