{"title":"发现地球","authors":"K. Vieira","doi":"10.1080/23311940.2015.1083285","DOIUrl":null,"url":null,"abstract":"On the 23 July 2015, NASA announced the discovery of Kepler-452b, the first exoplanet similar in size to our own planet (about 60% larger than Earth), orbiting around a star similar to our Sun (Kepler 452 is a G2V-type star) at about the same distance between Earth and Sun, within the habitable zone of this star. From these, other similarities extend: this exoplanet takes 385 Earth days to orbit its star, its probable mass is calculated to be about five times that of the Earth, and its surface gravity is twice of Earth’s.","PeriodicalId":43050,"journal":{"name":"Cogent Physics","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2015-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23311940.2015.1083285","citationCount":"0","resultStr":"{\"title\":\"Finding earths\",\"authors\":\"K. Vieira\",\"doi\":\"10.1080/23311940.2015.1083285\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"On the 23 July 2015, NASA announced the discovery of Kepler-452b, the first exoplanet similar in size to our own planet (about 60% larger than Earth), orbiting around a star similar to our Sun (Kepler 452 is a G2V-type star) at about the same distance between Earth and Sun, within the habitable zone of this star. From these, other similarities extend: this exoplanet takes 385 Earth days to orbit its star, its probable mass is calculated to be about five times that of the Earth, and its surface gravity is twice of Earth’s.\",\"PeriodicalId\":43050,\"journal\":{\"name\":\"Cogent Physics\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2015-12-31\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1080/23311940.2015.1083285\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Cogent Physics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1080/23311940.2015.1083285\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Cogent Physics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1080/23311940.2015.1083285","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
On the 23 July 2015, NASA announced the discovery of Kepler-452b, the first exoplanet similar in size to our own planet (about 60% larger than Earth), orbiting around a star similar to our Sun (Kepler 452 is a G2V-type star) at about the same distance between Earth and Sun, within the habitable zone of this star. From these, other similarities extend: this exoplanet takes 385 Earth days to orbit its star, its probable mass is calculated to be about five times that of the Earth, and its surface gravity is twice of Earth’s.
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