What do you mean by astronomical phenomena?

Astronomical phenomenon refers to the regular movement of the sun, moon and stars in the sky. Astronomical phenomena are the general names of various natural phenomena in the sky by ancient astrologers in China. Modern times usually refer to phenomena that occur outside the earth's atmosphere. Such as the sun, planetary movements, moon and moon changes, comets, meteors, meteor showers, meteorites and so on.

China's ancient astronomical records are a precious legacy left by China's ancient astronomy. In particular, the records of sunspots, comets, meteor showers and guest stars are rich and systematic, showing important scientific value. At the same time, it also reflects the work style of China ancient astronomers who are diligent in observation and good at recording.

Explain in detail:

1, [astronomical phenomenology]: refers to various astronomical phenomena, such as the appearance of the sun, planetary movements, changes in the sun and the moon, comets, meteors, meteors, meteorites, eclipses, eclipses, lasers, nova, supernovae, occultation of the moon, sunspots, etc. China paid attention to observing and recording astronomical phenomena as early as 3,000 to 4,000 years ago, and since then, civil servants and officials have attached great importance to it.

2. [Meteorological phenomena; Weather]: weather; Weather; climate

The most common celestial phenomenon is the occultation of stars, and the moon hides a planet. Or two stars accompany the moon, for example, in May 2008, there was a celestial phenomenon that the loess star blue Xuanyuan accompanied the moon. There have been many total solar eclipses in recent years, all in August 2008 1 and July 22, 2009. In addition, there were a rare annular solar eclipse on 10/0 and a partial solar eclipse on 2065438 10/26. However, due to tidal problems, most astronomical phenomena occur in rainy days.

The only meteor shower that can really be called "stars falling like rain" is the Leonid meteor shower. According to records, in ancient times, the ZHR value reached 4000. 10 The meteor landed in one second. The others can only be called Draco meteor shower.