Please help answer the questions about astronomical observation.

1. 1929, an American astronomer (Hubble) discovered the regression law of galaxies, which provided an important observation basis for the Big Bang hypothesis put forward by 1948 (Gamov).

Astronomical knowledge, I don't know if I can Baidu it.

2. Pluto was once a member of the planetary family, and it was that year (2006) that it was "downgraded" to a dwarf planet.

be the same as the above

3. Excuse me, which place is not the professional observation base of the National Astronomical Observatory? B tianhuangping

Astronomy lovers in Jiangnan know it.

Xiao Ming, who lives in Chengdu (east longitude 104 degrees, north latitude 3 1 degrees), went to school in the morning and looked up on the road to see a moon almost directly above his head. What is the most likely date of the lunar calendar? Twenty-three

The 23rd lunar month is the last quarter of the moon, and it reaches the zenith after sunrise.

5. The direction of sunrise and sunset on New Year's Day in Beijing is (southeast, southwest).

Celestial bodies with declination less than zero all rise and fall to the south.

6. Which of the following constellations is not adjacent to Cepheus? C infinite constellation

Look at the star map, a constellation in late spring and early summer and an autumn.

7. In which constellation are we least likely to observe the moon? Draco

Draco is too far from the ecliptic. PS, there is a place near the ecliptic in the whale.

8. The western star name corresponding to China's sexual name "Tianjin IV" is Cygnus α.

Common sense, Baidu.