Copyright:
Dominique Dierick
原文:
This coming Monday, Mercury will cross the face of the Sun, as seen from Earth. Called a transit, the last time this happened was in 2006. Because the plane of Mercury’s orbit is not exactly coincident with the plane of Earth’s orbit, Mercury usually appears to pass over or under the Sun. The above time-lapse sequence, superimposed on a single frame, was taken from a balcony in Belgium shows the entire transit of 2003 May 7. The solar crossing lasted over five hours, so that the above 23 images were taken roughly 15 minutes apart. The north pole of the Sun, the Earth’s orbit, and Mercury’s orbit, although all different, all occur in directions slightly above the left of the image. Near the center and on the far right, sunspots are visible. After Monday, the next transit of Mercury will occur in 2019. NASA Coverage: 2016 May 9 Mercury Transit of the Sun
中文翻譯:
這個星期一，水星將會橫越太陽的面貌，這個現象稱為“凌日”，自2006年以來首次發生。由於水星的軌道平面與地球的軌道平面並不完全重合，水星通常會出現在太陽的上方或下方。上面的時間延續序列是從比利時的一個陽台拍攝的，顯示了2003年5月7日整個凌日的過程。這次的太陽穿越持續了超過五個小時，因此我們拍攝了23張圖片，間隔約15分鐘。圖片的左上方，太陽的北極、地球的軌道和水星的軌道都在略高於左側的方向。圖中中心和右側可見日斑。在這次活動之後，下一次水星的凌日將會在2019年發生。
#水星凌日 #太陽 #天文現象 #NASA覆蓋 #太陽系的奧秘 #2016年5月9日水星凌日 #天文愛好者
來源:NASA每日圖片
