In June this year, the starry sky was very lively, and all kinds of celestial phenomena gathered and staged, giving astronomy lovers a glimpse of the beauty of the night sky. This June, let's look up at the stars and see what stars are on! Let's reveal the constellation knowledge for everyone. Looking up at the starry sky together in June is a carnival month for astronomy enthusiasts: at the beginning of the month, there will be appetizers such as Mercury East Distance and Penumbra Eclipse; 2 1 will also usher in the annual annular eclipse. Some astronomy enthusiasts call June the month with the most astronomical viewing value in 2020. June Astronomical Timetable On June 4th, Mercury's eastward viewing index: ☆☆☆☆ Mercury, which can be observed in high altitude areas such as western Sichuan and northern Sichuan, is the closest member of the eight planets in the solar system, and period of revolution is the shortest. On June 4th, the angular distance between Mercury and the sun was about 24. Because the declination is also higher than the sun, its horizon height can reach 18 at sunset. The inner planet has the farthest angular distance from the sun in a large distance, so it is not easy to be blocked by the glow of the sun. Located in the northwest sky after sunset. Mercury appears before dawn at an easterly distance, and its height is not high. As far as the atmospheric transparency in Sichuan Basin is concerned, we can try (observe) in high altitude areas such as western Sichuan and northern Sichuan, and in places with wide vision at low altitude in the west. Liu Ke, director of Tianjin Popular Science Writers Association, member of Beijing Astronomical Society and teacher of Shahe Popular Science Base of National Astronomical Observatory, introduced. Penumbral eclipse viewing index on June 6 There will be four eclipses in 2020, all of which are penumbral eclipses. Therefore, 2020 can also be described as the year of penumbral eclipse-June 1 day, Liu Ke posted a message on the official WeChat account of Shahe Science Education Base of the National Astronomical Observatory. According to the official Weibo @ Purple Mountain Observatory Science Department of Purple Mountain Observatory of China Academy of Sciences, this eclipse can be seen in southeastern South America, Atlantic Ocean (except northwest), Europe (except north), Africa, Asia (except north), Indian Ocean, Oceania, western Pacific and Antarctica. China is visible. On June 9 th, the viewing index of the double star with the moon (Jupiter+Saturn combined with the moon): ☆☆☆☆☆ Chengdu is expected to observe the smiling face of Zhangkou, and before dawn on the 8 th, we will also see Jupiter and Saturn appear near a bright moon. If you want to know the friends of Jupiter and Saturn, you can use the moon as a road sign at this time. Take Beijing as an example. At 04:00 am on the 9th, south-southwest direction, you can see the smiling faces of Saturn, Jupiter and the moon. On June 26th, the viewing index of annular eclipse was+0: ☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆9 The next annular solar eclipse in China will take nearly ten years, on June 1 day, 2030. Maximum viewing index of Mufu meteor shower on June 28th: ☆☆☆☆☆☆☆ It is not recommended for the general public to follow this meteor shower. At around 06:00 on June 28th, the Mufu meteor shower will have its maximum value. Liu Ke said that the uniqueness of this meteor shower lies in its fluctuating flow. 1998, and the ZHR of its outbreak period reached 100. In ordinary years, its ZHR is only about 1-2, which is not as good as the occasional meteor, and it is worthy of the name of meteor shower.