ALL ANSWERS · SPACE · DAILY No. 52 · OCTOBER 25, 2026
Size It Up Space answer: October 25
The five Space silhouettes for October 25, 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 52 ran from Titan (5,150 km) to Kepler-22 (1,209,000 km). The widest gap was round 1, Neptune against Proxima Centauri, at 4.0×; the closest call was round 2, TRAPPIST-1 d against Titan, 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
Neptune (mean diameter) vs Proxima Centauri (estimated stellar diameter)
Proxima Centauri · reference · 196,200 km Neptune · true diameter · 49,240 km 4.0× shorter than Proxima Centauri
Neptune has a mean diameter of about 49,244 km. This is the body’s size, not an orbital distance.
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ROUND 2
TRAPPIST-1 d (estimated planetary diameter) vs Titan (Saturn’s moon · mean diameter)
Titan · reference · 5,150 km TRAPPIST-1 d · true diameter · 10,050 km 2.0× wider than Titan
TRAPPIST-1 d has an estimated planetary diameter of about 10,051.9 km. This is the body’s size, not an orbital distance.
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ROUND 3
K2-18 b (estimated planetary diameter) vs Saturn (mean diameter · globe only)
Saturn · reference · 116,500 km K2-18 b · true diameter · 30,230 km 3.9× shorter than Saturn
K2-18 b has an estimated planetary diameter of about 30,232.2 km. This is the body’s size, not an orbital distance.
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ROUND 4
Kepler-10 c (estimated planetary diameter) vs TRAPPIST-1 h (estimated planetary diameter)
TRAPPIST-1 h · reference · 9,631 km Kepler-10 c · true diameter · 30,040 km 3.1× wider than TRAPPIST-1 h
Kepler-10 c has an estimated planetary diameter of about 30,040.9 km. This is the body’s size, not an orbital distance.
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ROUND 5
Kepler-22 (estimated stellar diameter) vs GJ 1132 (estimated stellar diameter)
GJ 1132 · reference · 307,600 km Kepler-22 · true diameter · 1,209,000 km 3.9× wider than GJ 1132
Kepler-22 has an estimated stellar diameter of about 1,209,126.6 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.