骑车去月亮

2020年10月02日

Biking to the Moon
Image Credit & Copyright: Susan Snow

Explanation: As you watched October’s first Full Moon rise last night, the Full Moon closest to the northern autumnal equinox, you were probably asking yourself, “How long would it take to bike to the Moon?” Sure, Apollo 11 astronauts made the trip in 1969, from launch to Moon landing, in about 103 hours or 4.3 days. But the Moon is 400,000 kilometers away. This year, the top bike riders in planet Earth’s well-known Tour de France race covered almost 3,500 kilometers in 21 stages after about 87 hours on the road. That gives an average speed of about 40 kilometers per hour and a lunar cycling travel time of 10,000 hours, a little over 416 days. While this bike rider’s destination isn’t clear, his journey did begin around moonrise on September 27 near Cleeve Hill, Bishops Cleeve, Cheltenham, UK.

Tomorrow’s picture: light-weekend

骑车去月亮
影像提供与版权: Susan Snow

说明: 昨晚，10月的第一个满月东升之时，当你看着这轮最接近北半球秋分的中秋月，你或许会纳闷：骑车去月亮要多久啊？在1969年，阿波罗11号的太空人，从发射到降落在月面历时约103小时（4.3天）。不过，月亮远在400,000公里之外。而在今年著名的环法自行车大赛，世界顶尖的自行车好手在21站的赛程中，以累计87小时左右的时间骑了约3,500公里。换算起来，平均时速约为40公里，所以完成逐月之旅要10,000小时，大约是416天多一点。虽然影像里的这位自行车手，其目的地不明，但他大约在9月27日月出之时，从英国．切尔滕纳姆市．毕晓普斯克利夫村附近的克利夫山起程。

明日的图片: light-weekend