I want to ask, is there water on the moon? How many people landed on the moon at that time?

The moon, the nearest star, is neither a star nor a planet, but the only natural satellite orbiting the earth. Of course, the moon was known as early as prehistoric times. It is second only to the sun in the sky. Because the moon orbits the earth once a month, the angles between the earth, the moon and the sun are constantly changing; We call it the new moon. It takes 29.5 days (709 hours) for a continuous new moon to appear, which varies with the orbital period of the moon (measured by stars) and the synchronous revolution of the earth around the sun.

The moon has no atmosphere. However, the evidence from Clementine aircraft shows that there may be solid water ice at the south pole of the moon, which is the permanently dark side of the Great Circle Mountain. This has been confirmed by the lunar probe. Obviously, there is ice in the north pole of the moon. There are two main landforms on its surface: huge craters and ancient plateaus, and a relatively smooth young moon sea. The topography of the Moon Sea (covering 65,438+06% of the moon's surface) was eroded by the fiery lava from the volcano. Most of the surface is covered by dust in calcareous soil and stone fragments hit by meteors. I don't know why, the moon and the sea are concentrated on the side close to the earth. Most craters and volcanoes near the earth are named after famous scientists in history, while most of the ones on the back are named after modern times.

1959 the Soviet aircraft Luna-2 visited the moon for the first time, which is also the first time that humans have explored non-earth stars. It is also the only planet whose surface samples have been brought back. In the summer of 1994, Clementine aircraft drew a lot of maps of the moon. The lunar prospector is now orbiting the moon.

The gravitational field between the earth and the moon has formed an interesting phenomenon. The most obvious phenomenon is the tidal phenomenon. The point where the earth is facing the moon has the greatest attraction, and the opposite point is relatively weak. The earth, especially the ocean, is not completely fixed, but extends slightly to the moon. From the surface of the earth, we will see that there are two expansion points on the surface of the earth, one facing the moon and the other facing the opposite side.

Three: Armstrong, Collins, Aldrin

In American lunar photography, their national flag is flying, but there is no air on the moon, so it is impossible for the national flag to fly.