Advanced seismological technology allowed us to make the discovery on the basis of the information received in the days of the space program "Apollo" (January 1967 - December 1972). It was found that the core of the moon is like the Terrestrial.
Knowledge about the lunar core are necessary to create an accurate model of the formation of the Moon. This information sheds light on the evolution of the lunar dynamo - a natural process by which the wind generated and kept its strong magnetic field.
The team found that the inside of the Moon is a solid, iron-rich inner core radius of about 240 km, as well as external, consisting mainly of liquid iron with a radius of about 330 km. Unlike the Earth, there is another part of the molten boundary layer with a radius of about 480 km.
The researchers used ischerpyvyyuschuyu information that was obtained during lunar missions "Apollo." Between 1969 and 1972, have been delivered to the moon four seismometer that recorded seismic activity of the Moon until 1977.
"We have used reliable methods of seismology for the treatment of this data set, resulting in the first obtained direct evidence about the lunar core," - said Renee Weber, lead researcher and cosmologist at NASA’s Marshall Space Center in Huntsville, Alabama.
The team also analyzed the lunar seismograms using the method of processing data in groups, which allows you to identify the source of moonquakes and other seismic activity. Researchers have identified as seismic waves which have passed or reflected from the inner layers of the moon that allowed the identification of the composition and structure of the layers at different depths.
"We look forward to continue working with the seismic data" Apollo "to make our calculations properties of the nucleus is even more accurate and decipher lunar signals as accurately as possible, which will help in the interpretation of the data obtained in future missions," - said Weber. Want to be the first to know about the most important - free news ticker, be the first.
Future NASA missions will help gather more detailed information.