ANU: Thank Earth's Magnetic Field for Water That Gives You Life
Posted: Thu Mar 14, 2019 6:57 pm
Thank Earth's Magnetic Field for Water That Gives You Life
Australian National University | 2019 Mar 13
Planetary Magnetism as a Parameter in Exoplanet Habitability ~ Sarah R.N. McIntyre et al
Australian National University | 2019 Mar 13
A study by scientists at ANU on the magnetic fields of planets has found that most planets discovered in other solar systems are unlikely to be as hospitable to life as Earth.
Plants and animals would not survive without water on Earth. The sheer strength of Earth's magnetic field helps to maintain liquid water on our blue planet's surface, thereby making it possible for life to thrive.
Scientists from the ANU Research School of Astronomy and Astrophysics modelled the magnetic fields of exoplanets - planets beyond our solar system - and found very few have a magnetic field as strong as Earth.
They contend that techniques for finding exoplanets the size of Earth are more likely to find slowly rotating planets locked to their host star in the same way the Moon is locked to Earth, with the same side always facing their host star.
The lead author of the study, PhD scholar Sarah McIntyre, said strong magnetic fields may be necessary to keep wet rocky exoplanets habitable. ...
Planetary Magnetism as a Parameter in Exoplanet Habitability ~ Sarah R.N. McIntyre et al
- Monthly Notices of the RAS (online 07 Mar 2019) DOI: 10.1093/mnras/stz667
- arXiv.org > astro-ph > arXiv:1903.03123 > 07 Mar 2019