![Moon lacked a magnetic field for nearly all its history – new research resolves mystery sparked by rocks brought back on Apollo Moon lacked a magnetic field for nearly all its history – new research resolves mystery sparked by rocks brought back on Apollo](https://images.theconversation.com/files/414219/original/file-20210802-16-1fr7zf0.jpeg?ixlib=rb-1.1.0&rect=3406%2C57%2C4240%2C2178&q=20&auto=format&w=320&fit=clip&dpr=2&usm=12&cs=strip)
Moon lacked a magnetic field for nearly all its history – new research resolves mystery sparked by rocks brought back on Apollo
![Apollo 12 mission deploys Ames developed special Lunar surface Magnetometer to measure magnetic fields on the moon (Tri-axis magnetometer Stock Photo - Alamy Apollo 12 mission deploys Ames developed special Lunar surface Magnetometer to measure magnetic fields on the moon (Tri-axis magnetometer Stock Photo - Alamy](https://c8.alamy.com/comp/PRBJ9D/apollo-12-mission-deploys-ames-developed-special-lunar-surface-magnetometer-to-measure-magnetic-fields-on-the-moon-tri-axis-magnetometer-PRBJ9D.jpg)
Apollo 12 mission deploys Ames developed special Lunar surface Magnetometer to measure magnetic fields on the moon (Tri-axis magnetometer Stock Photo - Alamy
![Moon lacked a magnetic field for nearly all its history – new research resolves mystery sparked by rocks brought back on Apollo Moon lacked a magnetic field for nearly all its history – new research resolves mystery sparked by rocks brought back on Apollo](https://images.theconversation.com/files/414216/original/file-20210802-26072-1xy2dvx.jpg?ixlib=rb-1.1.0&q=45&auto=format&w=1000&fit=clip)
Moon lacked a magnetic field for nearly all its history – new research resolves mystery sparked by rocks brought back on Apollo
![Moon lacked a magnetic field for nearly all its history – new research resolves mystery sparked by rocks brought back on Apollo Moon lacked a magnetic field for nearly all its history – new research resolves mystery sparked by rocks brought back on Apollo](https://images.theconversation.com/files/414220/original/file-20210802-18-817kht.jpg?ixlib=rb-1.1.0&q=45&auto=format&w=1000&fit=clip)
Moon lacked a magnetic field for nearly all its history – new research resolves mystery sparked by rocks brought back on Apollo
![Apollo 17 mission helps Oxford research the shape of the Moons magnetic field | University of Oxford Apollo 17 mission helps Oxford research the shape of the Moons magnetic field | University of Oxford](https://www.ox.ac.uk/sites/files/oxford/styles/ow_content_width/s3/media_wysiwyg/Jack%20Schmitt%20on%20the%20Moon%20during%20the%20Apollo%2017%20mission%20%28credit%20NASA%29.jpg?itok=ytjWcSR1)
Apollo 17 mission helps Oxford research the shape of the Moons magnetic field | University of Oxford
![Sitting on the lunar surface, this magnetometer provided new data on the Moon's magnetic field. This was one of the instruments used during the Apollo 12 mission Stock Photo - Alamy Sitting on the lunar surface, this magnetometer provided new data on the Moon's magnetic field. This was one of the instruments used during the Apollo 12 mission Stock Photo - Alamy](https://c8.alamy.com/comp/2BE1BFJ/sitting-on-the-lunar-surface-this-magnetometer-provided-new-data-on-the-moons-magnetic-field-this-was-one-of-the-instruments-used-during-the-apollo-12-mission-2BE1BFJ.jpg)
Sitting on the lunar surface, this magnetometer provided new data on the Moon's magnetic field. This was one of the instruments used during the Apollo 12 mission Stock Photo - Alamy
![Scientists pin down timing of lunar dynamo's demise | MIT News | Massachusetts Institute of Technology Scientists pin down timing of lunar dynamo's demise | MIT News | Massachusetts Institute of Technology](https://news.mit.edu/sites/default/files/download/202001/MIT-Magnetic-Moon-PRESS.jpg)
Scientists pin down timing of lunar dynamo's demise | MIT News | Massachusetts Institute of Technology
![Moon's magnetic field disappeared a BILLION years ago after its 'internal dynamo' stopped | Daily Mail Online Moon's magnetic field disappeared a BILLION years ago after its 'internal dynamo' stopped | Daily Mail Online](https://i.dailymail.co.uk/1s/2020/01/03/17/22958590-0-image-a-31_1578071774669.jpg)
Moon's magnetic field disappeared a BILLION years ago after its 'internal dynamo' stopped | Daily Mail Online
![The palaeoinclination of the ancient lunar magnetic field from an Apollo 17 basalt | Nature Astronomy The palaeoinclination of the ancient lunar magnetic field from an Apollo 17 basalt | Nature Astronomy](https://media.springernature.com/full/springer-static/image/art%3A10.1038%2Fs41550-021-01469-y/MediaObjects/41550_2021_1469_Fig1_HTML.png)