Big Physics Ideas: Time is Relative

Giles Sparrow (Author) Giles Sparrow is an author specializing in astronomy and physics. He has written about everything from space technology to the history of science.Giovana Medeiros (Illustrator) Giovana Medeiros was born in Criciuma, a city in the south of Brazil, and studied Fashion Design in her hometown, but later pursued her dream and studied Illustration at BCFE in Dublin, Ireland. Since 2011 she has been a full time illustrator and now lives in Lisbon, Portugal. Although she mostly illustrates children's books, she's also worked on magazines, textiles, games, apps. Aside from her work as an illustrator, she dedicates her free time towards creating autobiographical comics, discovering new recipes, drinking coffee and travelling.