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[ 책 소개 ]
* ALA Amelia Bloomer Award
* Georgia Children's Book Award
헨리에타 리비트(Henrietta Leavitt, 1868~1921)는 천문학에서 가장 중요한 이론인 "리비트의 법칙"을 발견한 미국의 유명한 천문학자입니다. 어려서부터 밤하늘의 별들을 보며 우주의 신비로움에 매료된 헨리에타는 여성 천문학자가 거의 없었던 19세기에 과감하게 자신의 꿈을 쫓아 천문학을 전공하게 됩니다.
대학을 졸업한 후, 하버드 천문대에서 근무하게 된 헨리에타는 밤하늘을 망원경으로 관찰하는 대신 낡은 책상 위에서 사진을 보며 하루종일 수천 개의 별을 밝기와 위치에 따라 기록하는 단순 노동에 자원했습니다. 날마다 별을 세는 고된 작업을 하던 헨리에타는 어느날 이상한 별 1777개를 찾아냅니다. 그것은 주기적으로 밝아졌다 어두워지기를 반복하는 ‘세페이드 변광성’이었어요. 헨리에타는 변광성 중에서 밝은 것일수록 주기가 길다는 사실을 찾아냈습니다. 리비트는 연구를 계속하여 세페이드 변광성의 주기-광도에 대한 법칙을 찾아냈는데 이것이 ‘리비트 법칙’입니다.
이 법칙은, 세페이드 변광성을 이용해 은하까지의 거리를 잴 수 있기 때문에 현대 천문학에서 매우 중요하게 평가받고 있습니다. 당시에는 우리 은하 이외의 은하는 없다는 의견이 많았는데, 리비트의 법칙을 토대로 허블이 멀리 떨어진 별의 거리를 측정해 안드로메다대성운이 은하라는 것을 밝혀냈습니다.
외부 은하가 지구에서 멀어지는 현상인 '허블의 법칙'을 발견해서 우주 팽창론을 주창한 20세기 최고의 천문학자 에드윈 허블은 자신의 법칙을 밝힌 열쇠는 헨리에타의 ‘세페이드 변광성’이었다고 인정했습니다. 에드윈 허블은 헨리에타의 업적에 대해 다음과 같이 극찬했습니다.
"리비트는 노벨상을 받아도 될 만큼 위대한 발견을 했다. 리비트가 우주의 크기를 결정할 수 있는 열쇠를 만들어 냈다면 난 그 열쇠를 자물쇠에 넣고 돌렸을 뿐이다."
튼튼한 하드커버 책입니다.
[동영상]
[ 서지 정보 ]
Hardcover: 32 pages
ISBN-10: 1416958193
ISBN-13: 978-1416958192
책 크기: 28.5 cm x 22.5 cm
[ 영문 서평 ]
Book Description
Henrietta 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 College Observatory, where she worked. After Henrietta observed that certain stars had a fixed pattern to their changes, her discovery made it possible for astronomers to measure greater and greater distances--leading to our present understanding of the vast size of the universe.
An astronomer of her time called Henrietta Leavitt “one of the most important women ever to touch astronomy,” and another close associate said she had the “best mind at the Harvard Observatory.” Henrietta Leaveitt's story will inspire young women and aspiring scientists of all kinds and includes additional information about the solar system and astronomy.
Booklist
When Henrietta Leavitt graduated from Radcliffe College in 1892, women were not seen as potential scientists. Still, she accepted a rather tedious job measuring the positions and sizes of stars in images photographed using the Harvard College Observatory telescope. Besides measuring and note-taking, she analyzed the records on certain stars that appeared to blink on and off. Her discovery that the time between blinks indicated both the star’s brightness and its distance from Earth led to the realization that the universe was much larger than previously thought. Focusing on the life of the mind, the text is contemplative and the illustrations are understated. In childhood, Leavitt is shown gazing at the night sky; as an adult, her most active endeavor is a sedate walk. The writing celebrates her achievement, though, and the lovely artwork, set outdoors at night or indoors by day, includes yellow, tan, and white elements that are luminous within the dimly lit scenes. A worthy picture book with informative back matter that will help children understand Leavitt’s challenging times as well as her achievement.
Publishers Weekly
Burleigh (George Bellows: Painter with a Punch!) investigates a woman astronomer who made a significant discovery in the 1900s when most women in her field “were human ‘computers.’ Their job was to record. And measure. And calculate. The women were expected to ‘work, not think.’ ” Henrietta Leavitt didn’t comply. Working at the Harvard College Observatory, she closely observed photographs of stars and uncovered a way to measure their true brightness, paving the way for others to measure even greater distances to the stars. Burleigh’s narrative is simultaneously succinct, descriptive, and appealing: “When she closed her eyes, she could still see the star dots, dancing across the inside of her eyelids.” Working in his familiar warm, glowing style, Colón (Annie and Helen) uses colored pencils and watercolors to create feathery-textured illustrations. Some images of Leavitt at work are rendered in muted beiges and greens, which make the night sky scenes shine all the brighter with their vivid royal blues and brilliant points of white light. An afterword about Leavitt and her discovery, glossary, bibliography, and other resources round out this attractive picture-book biography.
Bulletin of the Center for Children's Books
Burleigh introduces Henrietta Leavitt, a nineteenth-century woman determined to study astronomy at a time when “almost all astronomy teachers and students were men.” Although she graduated from college and secured a job in an observatory, Leavitt was confined to working with a group of other women doing calculations of star positions in photographs taken by male colleagues. Careful observations, however, led Leavitt to discover minute changes in the apparent brightness of certain stars over time, which in turn led to methods of determining how far a star is from Earth. This is a useful overview of a lesser-known scientific contributor, and Burleigh as usual writes with smooth clarity. ... A collection of end matter includes quotes about the stars, brief notes about Leavitt’s life and discoveries and about other early female astronomers, a glossary, and a compact list of websites and titles for more exploration.
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