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The new discovery can make boffins believe that they may have a novel way of detecting and finding exoplanets, including rogue ones that are hard to identify since they are not orbiting a parent star like the planets do in our solar system.

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

The so-called "rogue" planet does not revolve around a star, but instead rotates around the galactic center in interstellar space.

Brown dwarves have long stumped scientists: they're too huge to be considered planets and not big enough to be considered stars.

An unaccompanied brown dwarf like SIMP JO1365663+0933473, the object detected by the VLA, does not have a companion star and thus is not flying through a solar wind.

Astronomers have stumbled upon an enormous planet which is some 20 light years away from our Sun. By comparison, the Sun's surface temperature is about 5,500 degrees Celsius.

In any case, the newly discovered body has a magnetic field 200 times more powerful than Jupiter's and a surface temperature of about 825 degrees Celsius (more than 1,500 F).

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Using the radio astronomy observatory VLA (Karl G. Jansky Very Large Array, National Science Foundation), scientists could pick up the magnetic activity of the planetary mass and studied it.

Lead researcher Melodie Kao from Caltech said in a statement.

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This planet was first found in 2016, but scientists classified it as being a brown dwarf.

Scientists using a radio-telescope array have spotted a very big roaming cosmic body with an abnormally strong magnetic field. Researchers aren't sure how brown dwarf auroras happen - "rogue" planets like these lack a nearby star's solar wind for the magnetic field to interact with.

"When it was announced that SIMP0136 had a mass near the deuterium-burning limit, I had just finished analyzing its newest VLA data", Dr. Kao said. At its size, it's right between the size of a planet and a failed star, so scientists will need to study it further to determine exactly what it is.

Simultaneously, Dr. Kao's team observed SIMP0136 in a new study at even higher radio frequencies and confirmed that its magnetic field was even stronger than first measured - more than 200 times stronger than Jupiter's.


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