Moon Rocks

Observations are by far the most useful tool in an astronomers arsenal; however, predictions have their fair share of uses. One of the most interesting theories that cannot be observed is the Moon’s magnetic field, and why there is not one anymore. Moon rocks
Colwell 7 brought back from the Apollo age astronauts shows that at some point the moon did have a magnetic field as strong as the Earth’s at some point. From analyzing the way the rock formed, the scientists can determine how long the Moon had a magnetic field. From their research they have discovered that a magnetic field persisted for much longer than it should have and the only reason it consisted could have been a molten core, called a dynamo. However, the Moon’s core should have cooled much faster than the records show, something else must have been happening. Christina Dwyer of the University of California, Santa Cruz, and her colleagues suggest that the Moon’s solid-rock middle layer, called its mantle, stirs up its liquid iron core. The researchers believe that the Earth pulling on the Moon via gravity and the friction between the solid outside and the liquid core could have kept the core molten. Since the Earth and Moon were extremely close for a long time, this method was very plausible and explains why there is no longer a magnetic field. "The further out the
This field is called cosmology and it depends heavily on very precise predictions and calculations. Cosmology is often described as historical science and it is just as important to learn as non-science history. When studying the farthest reaches of space, it has taken light billions of years to reach Earth which means, by looking through telescopes, astronomers are looking backwards in time. Using this and elaborate predictions scientists have formulated theories and general laws to explain the universe. These have ranged from