Can taking a compass to the moon still guide the direction correctly?

1, no, on the moon, although the magnetic needle can still move freely, because there is no global dipole magnetic field on the moon, only some areas have some extremely weak magnetism, which is the magnetic field relic preserved by the moon's magnetic field magnetization when the rock ice on the moon crystallizes, also called remanence.

2. In the study of rocks brought back from the moon by American Apollo astronauts, scientists found that the magnetic field intensity around the moon is less than11000 of that of the earth. Because the magnetic field intensity is too weak, it is almost equivalent to nothing for a conventional instrument like a compass.

3. Compass, called Sina in ancient times, is mainly composed of magnetic needles installed on the shaft. Under the action of natural geomagnetic field, the magnetic needle can rotate freely and keep in the tangential direction of magnetic meridian. The south pole of the magnetic needle points to the geographical south pole (magnetic north pole), and the direction can be distinguished by using this property.

4. Commonly used in navigation, geodesy, tourism and military. The invention of the compass with physical direction indication has three parts, namely Sina, compass and magnetic needle, all of which belong to the invention of China. According to ancient mine records, it first appeared in the Cishan area during the Warring States Period.

5. Compass is the result of China ancient working people's understanding of magnet magnetism in long-term practice. As one of four great inventions of ancient china, its invention has played an inestimable role in the development of human science, technology and civilization. In ancient China, the compass was first used for rituals, etiquette, military affairs and divination, and to determine the orientation when looking at geomantic omen.