Published: Tue, August 07, 2018
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Mysterious big rogue planet spotted lurking outside our solar system

Mysterious big rogue planet spotted lurking outside our solar system

In 2016, Dr. Kao and co-authors observed SIMP0136 with the Very Large Array (VLA) in order to gain new knowledge about magnetic fields and the mechanisms by which some of the coolest brown dwarfs can produce strong radio emission.

They're dubbing it "rogue" because it's mysteriously "drifting" through space without any kind of orbit around a parent star.

In the first radio-telescope detection of a planetary-mass object beyond our solar system, astronomers have found the unusual celestial body has 12.7 times the mass of Jupiter.

The new planet is 12 times the size of Jupiter which has a radius of more than 69,000 kilometres.

'This object is right at the boundary between a planet and a brown dwarf, or "failed star", and is giving us some surprises that can potentially help us understand magnetic processes on both stars and planets, ' said Dr Melodie Kao, an astronomer at Arizona State University.

According to the sources, this unusual exoplanet was first spotted two years ago, but it was cataloged as a massive brown dwarf - celestial objects that are too big to be planets but too small to constitute even the smallest star.


A massive rogue planet has been discovered beyond our solar system. Astronomers say the rogue planet is located 20 light-years from Earth and is about 200 million years old - which, in the grand scheme of things, is considered young for a planet. But it's possible an orbiting planet or moon could trigger similar interactions like the ones seen between Jupiter and its moon Io. Scientists theorise that one possibility is having a planet or moon interact with the dwarf's magnetic field. Latest measurements have established that the exoplanet has a surface temperature of 825 degrees Celsius (around 1517 degrees Fahrenheit), shows the International Business Times.

It's very large, and has an extremely strong magnetic field, and it's a "rogue", not attached to any other object.

Nevertheless, we still can't figure out how brown dwarf stars get auroras, considering they're nowhere near any type of stellar winds.

Researchers are working to explain the presence of a mysterious large object floating outside the solar system that may be a rogue planet, RT reported.

This is known as the "deuterium-burning limit" and happens around 13 Jupiter masses.

The unusually strong magnetic field "presents huge challenges to our understanding of the dynamo mechanism that produces the magnetic fields in brown dwarfs and exoplanets and helps drive the auroras we see", said Caltech's Gregg Hallinan. It is a component of the National Radio Astronomy Observatory (NRAO).

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