In the 1980s, Earth and the other planets orbiting the Sun were the only planets known in the universe. Since then, astronomers have found thousands of planets circling other stars. Find out more in Finding Earthlike Planets, one of the titles in the Space Exploration series.
语言 英语 ● 格式 PDF ● 网页 48 ● ISBN 9781489698247 ● 文件大小 14.9 MB ● 年龄 17-14 年份 ● 出版者 Weigl Publishers Inc. ● 发布时间 2019 ● 下载 24 个月 ● 货币 EUR ● ID 7212764 ● 复制保护 Adobe DRM
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