Look Up!: Henrietta Leavitt, Pioneering Woman Astronomer by Robert Burleigh mosses Don't Call 911

Don't Call 911

Kennedy and Hooker uncover a concurrent explosion of childhood allergic

You can love yourself and love your kids

wants us to break this cycle with lessons our ancestors learned over thousands of years of trial and error

Look Up!: Henrietta Leavitt, Pioneering Woman Astronomer by Robert Burleigh mosses Don't Call 911Henrietta Levitt was the first person to discover the scientific importance of a star's brightness so why has no one heard of her? Learn all about a female pioneer of astronomy in this picture book biography. Henrietta Swan Leavitt was born on July 4, 1868, and she changed the course of astronomy when she was just twenty five years old. Henrietta spent years measuring star positions and sizes from photographs taken by the telescope at the Harvard