拱门国家公园双拱门映衬下的银河，犹他州，美国 The Milky Way framed by Double Arch in Arches National Park, Utah (© Adventure_Photo/Getty Images)

拱门国家公园双拱门映衬下的银河，犹他州，美国 The Milky Way framed by Double Arch in Arches National Park, Utah (© Adventure_Photo/Getty Images)

让我们一起庆祝宇宙 Let's celebrate the cosmos

国际天文日快乐！

你是否曾好奇，通过望远镜看到的土星环是什么样子？又或者，天文学家是如何发现遥远星系的？国际天文日正是探索这些奥秘的绝佳时机！这一年度活动最早于 1973 年发起，其官方主题是：“将天文学带给大众”。 从当地公园到天文俱乐部、博物馆，再到天文台，游客们可以参与望远镜观测、太空讲座，甚至体验模拟月球重力的装置！这一想法起源于加利福尼亚的一位天文学家道格·伯杰。他不再等待人们走进天文台，而是直接把望远镜带到热闹的公共场所。这一招奏效了，人们很快就迷上了仰望星空！如今，世界各地都在庆祝国际天文日，加拿大、瑞典、阿根廷等许多国家都有举办相关活动。今天，就是探索宇宙的好时机。找一架望远镜，一起仰望星空、庆祝宇宙的壮丽吧！

Happy International Astronomy Day!

Ever wondered what Saturn's rings look like through a telescope? Or how astronomers spot distant galaxies? International Astronomy Day is the perfect time to find out. This annual event, first launched in 1973, is all about 'Bringing Astronomy to the People'—the official theme of Astronomy Day. From local parks to astronomy clubs, museums, and observatories, visitors can enjoy activities like telescope viewings, space talks, and even moon gravity simulators.

The event started when Doug Berger, an astronomer in California, decided to take telescopes to busy public spaces rather than wait for people to visit observatories. It worked—people got hooked on stargazing. Astronomy Day is celebrated worldwide, with events in countries like Canada, Sweden, and Argentina, among many others. Today is the day to explore the universe. Find a telescope and celebrate the cosmos!