ALL ANSWERS · SPACE · DAILY No. 36 · OCTOBER 9, 2026
Size It Up Space answer: October 9
The five Space silhouettes for October 9, 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 36 ran from Deimos (12.4 km) to Kepler-22 (1,209,000 km). The widest gap was round 1, Epimetheus against Enceladus, at 4.3×; the closest call was round 5, Metis against Prometheus, only 2.0× 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
Epimetheus (Saturn’s moon · mean diameter) vs Enceladus (Saturn’s moon · mean diameter)
Enceladus · reference · 504.2 km Epimetheus · true diameter · 116.4 km 4.3× shorter than Enceladus
Epimetheus, a moon of Saturn, has a mean diameter of about 116.4 km. This is the body’s size, not an orbital distance.
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ROUND 2
Uranus (mean diameter) vs TRAPPIST-1 (estimated stellar diameter)
TRAPPIST-1 · reference · 165,900 km Uranus · true diameter · 50,720 km 3.3× shorter than TRAPPIST-1
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 3
Helene (Saturn’s moon · mean diameter) vs Deimos (Mars’s moon · mean diameter)
Deimos · reference · 12.4 km Helene · true diameter · 36 km 2.9× wider than Deimos
Helene, a moon of Saturn, has a mean diameter of about 36 km. This is the body’s size, not an orbital distance.
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ROUND 4
LHS 1140 (estimated stellar diameter) vs Kepler-22 (estimated stellar diameter)
Kepler-22 · reference · 1,209,000 km LHS 1140 · true diameter · 300,400 km 4.0× shorter than Kepler-22
LHS 1140 has an estimated stellar diameter of about 300,403.3 km. This is the body’s size, not an orbital distance.
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ROUND 5
Metis (Jupiter’s moon · mean diameter) vs Prometheus (Saturn’s moon · mean diameter)
Prometheus · reference · 86.2 km Metis · true diameter · 43 km 2.0× shorter than Prometheus
Metis, a moon of Jupiter, has a mean diameter of about 43 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.