The five space objects from the Size It Up puzzle on October 21, 2026, with the measured size of each, the reference it was compared against, a source you can check, and how the community's guesses landed. Want the surprise first? Replay this puzzle — archived days never touch your streak.
The October 21, 2026 puzzle ran from the Perseverance rover at 3 m to the Sun at 1,392,700 km — 8 orders of magnitude apart, drawing on space. The pair furthest apart was round 1: the Sun is 508284672× as big as a concert grand piano.
ROUND 1
How wide is the Sun compared with a concert grand piano?
Answer: The Sun — 1,392,700 km. The Sun measures 1,392,700 km (length / span), which is 508284672× as big as the reference, a concert grand piano at 2.7 m.
The Sun is about 1.39 million kilometres in diameter.
Common miss: players tend to compress the Sun when it sits beside a concert grand piano — big things get squeezed, small familiar things get stretched.
How long is the Perseverance rover compared with a Velociraptor?
Answer: Perseverance Rover — 3 m. The Perseverance rover measures 3 m (length / span), which is 1.5× as big as the reference, a Velociraptor at 2 m.
Perseverance is about the length of a small car.
Common miss: players tend to compress the Perseverance rover when it sits beside a Velociraptor — big things get squeezed, small familiar things get stretched.
How long is the International Space Station compared with a Boeing 747?
Answer: International Space Station — 109 m. The International Space Station measures 109 m (length / span), which is 1.5× as big as the reference, a Boeing 747 at 70.7 m.
The ISS spans roughly 109 metres across its solar arrays.
Common miss: players tend to compress the International Space Station when it sits beside a Boeing 747 — big things get squeezed, small familiar things get stretched.
How tall is a Starship launch stack compared with a Saturn V rocket?
Answer: Starship Launch Stack — 121 m. A Starship launch stack measures 121 m (height), which is 1.1× as big as the reference, a Saturn V rocket at 110.6 m.
The complete Starship launch stack is about 121 metres tall.
Common miss: players tend to compress a Starship launch stack when it sits beside a Saturn V rocket — big things get squeezed, small familiar things get stretched.
Sizes are measured along the axis named in each round and link to their published source. Explore the full library by category, or read how scoring works.