"Meet Carl Sagan, known for his research on extraterrestrial life! Follow Sagan's story as he theorizes on the temperature of Venus's surface, works with NASA to build the Mariner 2, Viking I, and Viking II probes, and creates the popular PBS program Cosmos. Infographics, historic photos, and a glossary enhance readers' understanding of this topic. Additional features include a table of contents, an index, a timeline and fun facts. Aligned to Common...

"A picture book biography of Nancy Grace Roman, the astronomer who overcame obstacles such as weakening eyesight and teachers who did not believe astronomy was an appropriate career for a woman to lead the NASA team to build the Hubble Space Telescope. This is the empowering story of a female scientist's triumphs at a time when society discouraged women from pursuing scientific careers. It is also the story of an important milestone in the field of...