2023-11-20 21:01:50
Scientists at NASA have discovered the secret of the contraction of the sizes of a number of planets, in a phenomenon that has attracted their attention in recent years. Related topics: The study, published in The Astronomical Journal, said that the exoplanets outside our solar system are giant gaseous bodies such as Jupiter, or rocky balls the size of our planet. The problem lies in noticing a gap in their sizes, especially since some planets are regarding 1.5 inches wide. To twice the width of the Earth. Scientists considered this gap not the result of a coincidence, considering that there are factors that prevent planets from reaching the aforementioned size. Scientists attributed the reason for this to the fact that some sub-planets, such as Neptune, are shrinking, as a result of losing its atmosphere. For her part, the researcher explained Jesse Christiansen, a research scientist at the California Institute of Technology, says that the size gap accelerates the contraction of worlds, as a result of radiation from the cores of planets, which pushes their atmospheres away into space. Therefore, the study focused on the hypothesis that planets push their atmospheres away, noting that exoplanets may It lacks mass and therefore gravity, which means that its atmosphere will not be preserved soon. One of the most prominent hypotheses that the study highlighted is “mass loss by basic energy,” which occurs when the planet’s core emits radiation that pushes its atmosphere from below until it separates. The second hypothesis is “photoevaporation.” “, in which the planet’s atmosphere is dissipated as a result of the radiation of its host star. Source: Al Ain News Responsibility for the news: The “Cedar News” website is not responsible for this news in form or content, and it only expresses the point of view of its source or writer.
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