Phys.org
What Magnetic Fields Can Tell Us About Life On Other Planets
Published 22nd November 2018
Every school kid knows that Earth has a magnetic field – it's what makes compasses align north-south and lets us navigate the oceans. It also protects the atmosphere, and thus life, from the sun's powerful wind.
But what about other Earth-like planets in the galaxy? Do they also have magnetic fields to protect emerging life?
A new analysis looks at one type of exoplanet – super-Earths up to five times the size of our own planet – and concludes that they probably do have a magnetic field, but one generated in a totally novel way: by the planets' magma oceans.
Read all about it here: https://phys.org/news/2018-11-magnet...e-planets.html






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