The five space objects from the Size It Up puzzle on October 10, 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 10, 2026 puzzle ran from the Perseverance rover at 3 m to Earth at 12,742 km — 6 orders of magnitude apart, drawing on space. The pair furthest apart was round 4: Earth is 3.7× as big as the Moon.
ROUND 1
How long is the Hubble Space Telescope compared with a Tyrannosaurus rex?
Answer: Hubble Space Telescope — 13.1 m. The Hubble Space Telescope measures 13.1 m (length / span), which is 1.1× as big as the reference, a Tyrannosaurus rex at 12.3 m.
Hubble is roughly the size of a school bus, which is exactly what the Shuttle’s cargo bay was built to hold.
Common miss: players tend to compress the Hubble Space Telescope when it sits beside a Tyrannosaurus rex — big things get squeezed, small familiar things get stretched.
How long is the Perseverance rover compared with a concert grand piano?
Answer: Perseverance Rover — 3 m. The Perseverance rover measures 3 m (length / span), which is 1.1× as big as the reference, a concert grand piano at 2.7 m.
Perseverance is about the length of a small car.
Common miss: players tend to compress the Perseverance rover when it sits beside a concert grand piano — big things get squeezed, small familiar things get stretched.
How wide is Mars compared with the contiguous United States?
Answer: Mars — 6,779 km. Mars measures 6,779 km (length / span), which is 1.5× as big as the reference, the contiguous United States at 4,500 km.
Mars is a little over half Earth’s diameter.
Common miss: players tend to compress Mars when it sits beside the contiguous United States — big things get squeezed, small familiar things get stretched.
How long is the International Space Station compared with an American football field?
Answer: International Space Station — 109 m. The International Space Station measures 109 m (length / span), which is almost exactly the same size as the reference, an American football field at 109.7 m.
The ISS spans roughly 109 metres across its solar arrays.
Common miss: players tend to inflate the International Space Station when it sits beside an American football field — 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.
Size It Up Answers Oct 10, 2026 (#19): Basketball Hoop, American School Bus & More