echemi logo
Product
  • Product
  • Supplier
  • Inquiry
    Home > Biochemistry News > Biotechnology News > Tiancang five stars have four planets the size of Earth.

    Tiancang five stars have four planets the size of Earth.

    • Last Update: 2020-08-25
    • Source: Internet
    • Author: User
    Search more information of high quality chemicals, good prices and reliable suppliers, visit www.echemi.com
    BEIJING, Aug. 20 (Xinhua) -- Astronomers have recently discovered that the star Tiancang V, about 12 light-years away, has four Earth-like planets, two of which are located in the star's livable zone.
    tiancang five is located in the constellation Ofsted, the human eye can see, its size, luster and other properties are similar to the sun, is the closest sun-like star to the sun.
    scientists discovered signs of the presence of five planets around Tiancang V in 2012, the new study provides a more accurate analysis of at least four planets.
    new study, conducted by a team of researchers from the University of Hertfordshire in the United Kingdom and the University of California, Santa Cruz, confirmed the existence of the four planets by observing the tiny swings of Tiancang V itself.
    researchers report in the American Journal of Astronomy that the four planets orbit their parent stars for 20, 49, 162 and 636 days, respectively, and have a mass no more than four times the mass of Earth, the smallest of which is only 1.7 times the mass of Earth.
    planets on the periphery of the Earth are 0.5 astronomical units and 1.5 astronomical units, respectively, and are located on the inner and outer edges of the livable zone around Tiancang V.
    livable zone refers to the region where the surface temperature of the planet allows liquid water to exist at a moderate distance from the star, and is the target area for people looking for extraterreterreo life.
    but Tiancang V has a huge disk of dust, and its planets are bombarded by dense meteorites, which is a disadvantage to life.
    because the planets themselves do not glow, exoplanets are often difficult to observe directly.
    the gravitational pull of the planet causes the parent star to oscing, which is currently the main means of finding exoplanets, according to the star's spectral changes.
    researchers say they have used a new method to remove noise from the data, achieving very high analytical accuracy and approaching the resolution limit of the method.
    source: Xinhua News Agency.
    This article is an English version of an article which is originally in the Chinese language on echemi.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to service@echemi.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

    Contact Us

    The source of this page with content of products and services is from Internet, which doesn't represent ECHEMI's opinion. If you have any queries, please write to service@echemi.com. It will be replied within 5 days.

    Moreover, if you find any instances of plagiarism from the page, please send email to service@echemi.com with relevant evidence.