Science & Space Crossword Puzzles
Science is a generous crossword theme because so much of its vocabulary is short and precise. Element names, units, planets and particles fit grids beautifully, and the clues can be straight definitions without ever feeling flat. You will find yourself filling in NEON and IONS almost on reflex, then stopping dead at a term from geology you last saw at school.
These grids cover physics, chemistry, biology and astronomy in roughly even measure, with a bias towards the things people half-remember rather than anything a specialist would call obscure. A new puzzle appears each week, the archive stays open, and nothing is behind a login. Solve it online with the timer running, or print the empty grid and clue list if you prefer paper and a pencil.
This week's puzzle
Archive
Science & Space Crossword — 30 September 2026
30 September 2026 · 15×15 · Medium
Science & Space Crossword — 23 September 2026
23 September 2026 · 15×15 · Medium
Science & Space Crossword — 16 September 2026
16 September 2026 · 15×15 · Medium
Science & Space Crossword — 9 September 2026
9 September 2026 · 15×15 · Medium
Science & Space Crossword — 28 August 2026
28 August 2026 · 27×27 · Medium
What makes these fun to solve
- • Element and planet names are short, crossing-friendly and quietly satisfying.
- • Definitions stay straight — no cryptic tricks hiding the science.
- • A good way to find out what actually stuck from school.
Common questions
- Are these crosswords free?
- Yes, all of them. You can solve every puzzle in the archive in your browser without paying and without making an account. There are ads on the free site, and a small supporter option if you would rather not see them.
- How often are new puzzles added?
- One new puzzle in each theme every week, and the older ones stay in the archive on the same page rather than disappearing.
- Can I print the puzzles?
- Yes. Every puzzle has a print view that lays the empty grid and the clues out on A4, with a separate answer sheet, so you can run off a copy for each person.
- Can I make my own science crossword?
- Yes. Type in your own words — a topic your class is covering, or terms from your own field — write a clue for each one, and the grid arranges itself around them. It takes about five minutes, and you get a link you can send to anyone, plus a printable version.
Make your own science crossword
Your own words and clues, arranged into a grid in about five minutes, with a link you can send to anyone.
Build a crossword