2023年08月26日:金星的蛾眉位相-（Crescents of Venus）--原图下载
Image Credit &Copyright: Roberto Ortu
说明: 类似月亮有位相变化一样，金星可见的日耀区也会有盈亏。这组望远镜影像序列，呈现金星在2023年以昏星之姿出现的期间，日耀区渐次变化的景象。在地球与太阳之间的内行星轨道运行的金星，在这段期间的张角之所以会变大，是因为它越来越靠近地球。而它的蛾眉相之所以会愈来愈细，则是因为金星逐渐靠近我们往太阳的视线。它在8月13日来到最接近地球的下合位置，以大约8度的间距从太阳下方通过。如今金星已在清晨的东方地平线上方绽放光芒，结束了成为地球晨星的过渡。在8月21日，美国航太总署的帕克太阳探测器进行了对金星的第六次重力辅助飞越，并利用这次的相遇，操控探测器往记录上最靠近太阳的位置移动。
原文：
Image Credit &Copyright: Roberto Ortu
Explanation: Just as the Moon goesthrough phases, Venus' visible sunlit hemispherewaxes and wanes.This sequence oftelescopicimagesillustrates the steady changes for Venus duringits recent 2023 apparition as our evening star.Gliding along its interior orbit between Earth and Sun, Venus growslarger during that period because it is approaching planet Earth.Its crescent narrows though, as the inner planet swings closer to ourline-of-sight to the Sun.Closest to the Earth-Sun line but passing about 8 degrees south of theSun, on August 13 Venus reached its (non-judgmental)inferior conjunction.And now Venus shines above the eastern horizon inpredawn skies, completing its transition to planet Earth'smorning star.On August 21, NASA's Parker Solar Probe completed its sixthgravity assist flyby of Venus, using the encounter to maneuverthe probe toward itsclosest approach yet to the Sun.
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