How this cosmic map of magnetic fields could help illuminate one of the universe’s most mysterious forces
Summary
Scientists have created the largest-ever map of magnetic fields in the universe by measuring light from nearly 4 million galaxies. This new map will help researchers understand how magnetic fields started and changed over time since the Big Bang.Key Facts
- The map, called SPICE_RACS, was made using the Australian Square Kilometre Array Pathfinder (ASKAP) radio telescope in Western Australia.
- The project was led by Australia’s national science agency, CSIRO.
- Magnetic fields exist on Earth, stars, galaxies, and even in the empty space between galaxies.
- Before this map, there were limited magnetic field data, especially in the southern sky.
- The new dataset is five times larger and more detailed than previous maps.
- Magnetic fields form from moving charged particles or molten metals inside planets or stars.
- The data is publicly available for scientists worldwide to conduct further research.
- Understanding magnetic fields helps explain key forces in space alongside gravity.
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