DAILY NO. 17 · VERIFIED MEASUREMENTS
Today's five Size It Up comparisons with the measured size of each object, its reference and a source you can check. The puzzle is still live, so every answer stays hidden until you tap it. Haven't played yet? Play today's puzzle first.
The October 8, 2026 puzzle ran from a house key at 6 cm to Mars at 6,779 km — 8 orders of magnitude apart, drawing on space, geography, everyday, landmarks, dinosaurs. The pair furthest apart was round 2: Manhattan Island is 10630× as big as a US interior door.
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.
Answer: Manhattan Island — 21.6 km. Manhattan Island measures 21.6 km (height), which is 10630× as big as the reference, a US interior door at 2 m.
Manhattan is about 21.6 kilometres long.
Common miss: players tend to compress Manhattan Island when it sits beside a US interior door — big things get squeezed, small familiar things get stretched.
Answer: House Key — 6 cm. A house key measures 6 cm (length / span), which is about 1.3× smaller than the reference, a chocolate chip cookie at 8 cm.
Keys settle around 6 cm because that is what the lock cylinder needs, not the hand.
Common miss: players tend to inflate a house key when it sits beside a chocolate chip cookie — big things get squeezed, small familiar things get stretched.
Answer: Mount Rushmore Faces — 18.3 m. The Mount Rushmore faces measures 18.3 m (height), which is about 5.1× smaller than the reference, the Statue of Liberty at 93 m.
Each carved presidential head is about 18 metres tall.
Common miss: players tend to inflate the Mount Rushmore faces when it sits beside the Statue of Liberty — big things get squeezed, small familiar things get stretched.
Answer: Tyrannosaurus rex — 12.3 m. A Tyrannosaurus rex measures 12.3 m (length / span), which is 1.4× as big as the reference, a Triceratops at 9 m.
A large T. rex reached around 12.3 metres long.
Common miss: players tend to compress a Tyrannosaurus rex when it sits beside a Triceratops — 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.