
“Helene observed.
Helene questioned.
Helene had ideas.”
Growing up in the French Alps, Helene Curtois loved to look at the night sky through her binoculars – and wondered what was beyond the moon.
At university, she studied astrophysics, the science of how natural objects in space (like the moon) begin, grow, and interact. When she was ignored because she was a woman, Helene remembered the brilliant women scientists who’d made discoveries before her and decided to go even further.
She fell in love with galaxies seen through the university’s professional telescope and decided to map these swirling islands of stars and dust in the night sky, to become a cosmographer.
Traveling to the best telescopes around the world, Helene and her scientific team observed and mapped thousands of galaxies and discovered they were all moving toward one place, a supercluster of galaxies!
What is beyond the moon? Now we -and Helene- know.
Includes a timeline of Helene’s life (ongoing!), glossary of galactic terms, notes on other fiercely intelligent women in astronomy, selected bibliography, and “where is a good location to build a professional telescope.”
Want a quick intro to a subject that’s completely new to you? Grab a non-fiction picturebook!
**kmm
Book info: Galaxy Mapper: the Luminous Discoveries of Astrophysicist Helene Curtois / Allie Summers; illustrated by Sian James. MIT Kids Press, 2025. [illustrator site https://www.sianjames.com/ ] [publisher site https://www.penguinrandomhouse.com/books/787573/galaxy-mapper-the-luminous-discoveries-of-astrophysicist-helene-courtois-by-allie-summers-illustrated-by-sian-james/] Review copy and cover image courtesy of the publisher.








