Alexandra Siy

writer & photographer

The SIYENCE Nonfictionista

I write books that turn STEM into STEAM.

The "A" is for art.







"Go 303,000,000 miles, then stop at the fourth rock from the Sun."
So begins this marvelous book...
~NSTA Recommends


"CARS ON MARS grips the kids with its title, then hauls them into a great story laden with facts that are consistently interesting."

--from FUSE # 8 Review of the Day


NSTA/​CBC Outstanding Science Trade Book


Bank Street College of Education Best Children’s Books of the Year 2010


New York Public Library 100 Titles for Reading & Sharing


Top 10 Science-Tech Books Booklist Online


2010 Finalist AAAS/​Subaru SB&F Prize for Excellence in Science Books


Starred Reviews: School Library Journal; Booklist



©2014 Alexandra Siy