ALL ANSWERS · SPACE · DAILY No. 31 · OCTOBER 4, 2026
Size It Up Space answer: October 4
The five Space silhouettes for October 4, 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 31 ran from Pandora (81.2 km) to LHS 1140 (300,400 km). The widest gap was round 5, Thebe against Miranda, at 4.8×; the closest call was round 4, Pandora against Epimetheus, 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
Hyperion (Saturn’s moon · mean diameter) vs Enceladus (Saturn’s moon · mean diameter)
Enceladus · reference · 504.2 km Hyperion · true diameter · 270 km 1.9× shorter than Enceladus
Hyperion, a moon of Saturn, has a mean diameter of about 270 km. This is the body’s size, not an orbital distance.
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ROUND 2
Jupiter (mean diameter) vs LHS 1140 (estimated stellar diameter)
LHS 1140 · reference · 300,400 km Jupiter · true diameter · 139,800 km 2.1× shorter than LHS 1140
Jupiter has a mean diameter of about 139,822 km. This is the body’s size, not an orbital distance.
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ROUND 3
Uranus (mean diameter) vs Venus (mean diameter)
Venus · reference · 12,100 km Uranus · true diameter · 50,720 km 4.2× wider than Venus
Uranus has a mean diameter of about 50,724 km. This is the body’s size, not an orbital distance.
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ROUND 4
Pandora (Saturn’s moon · mean diameter) vs Epimetheus (Saturn’s moon · mean diameter)
Epimetheus · reference · 116.4 km Pandora · true diameter · 81.2 km 1.4× shorter than Epimetheus
Pandora, a moon of Saturn, has a mean diameter of about 81.2 km. This is the body’s size, not an orbital distance.
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ROUND 5
Thebe (Jupiter’s moon · mean diameter) vs Miranda (Uranus’s moon · mean diameter)
Miranda · reference · 471.6 km Thebe · true diameter · 98.6 km 4.8× shorter than Miranda
Thebe, a moon of Jupiter, has a mean diameter of about 98.6 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.