Gravity Is a Mystery (Let's-Read-and-Find-Out Science 2)

作者 Franklyn M. Branley著Edward Miller绘
出版社 HarperCollins US
出版时间 2007年5月第1版
ISBN 9780064452014
定价 51.10

内容简介

Whatgoesupmustcomedown.Everybodyknowsthat.Butwhatisitthatpullseverythingfromrockstorocketstowardthecenteroftheearth?It'sgravity.Nobodycansayexactlywhatitis,butgravityisthere,pullingoneverything,allthetime.Withthehelpofanadventurousscientistandhisfun-lovingdog,youcanreadandfindoutaboutthismysteriousforce.

作者简介

FranklynM.BranleywastheoriginatoroftheLet's-Read-and-Find-OutScienceseriesandtheauthorofcloseto150popularbooksaboutscientifictopicsforyoungreadersofallages.HewasAstronomerEmeritusandformerChairmanoftheAmericanMuseum-HaydenPlanetarium.

— END —