Astronomers have detected a repeating radio signal from an exoplanet and the star that it orbits, both located 12 light-years away from Earth.
Earth’s magnetic field protects the planet’s atmosphere, which life needs to survive, by deflecting energetic particles and plasma that stream out from the sun. Finding atmospheres around planets located outside of our solar system could point to other worlds that potentially have the ability to support life. Scientists noticed strong radio waves coming from the star YZ Ceti and the rocky exoplanet that orbits it, called YZ Ceti b, during observations using the Karl G.
If the planet has a magnetic field and it plows through enough star stuff, it will cause the star to emit bright radio waves.” YZ Ceti b only takes two Earth days to complete a single orbit around its star. Meanwhile, the shortest orbit in our solar system is the planet Mercury, which takes 88 Earth days to complete a lap around the sun. While YZ Ceti b whips around its star, plasma from the star collides with the planet’s magnetic field, bounces off and interacts with the star’s magnetic field.
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