Giant 'Rogue' Planet Just Spotted A Mere 20 Light-Years Away From Earth

Rodiano Bonacci
Agosto 5, 2018

The National Radio Astronomy Observatory is a facility of the National Science Foundation, operated under cooperative agreement by Associated Universities, Inc.

Scientists detected the enormous planet from the US -based Very Large Array observatory.

"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 study lead author 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.

Furthermore, the enormous exoplanet - which is slightly bigger than Jupiter, the largest planet in our solar system - has an extremely powerful magnetic field, more than 200 times stronger than that of our gas giant.

The object was originally detected in 2016 as one of five brown dwarfs the scientists studied with the VLA to gain new knowledge about magnetic fields and the mechanisms by which some of the coolest such objects can produce strong radio emission. The latest data reveals it's younger than first thought at a relatively youthful 200 million years old, and its mass is smaller, so it could be classified as a planet.

Scientists have discovered a planet that travels outside our solar system, but it seems that it doesn't orbit a star.

Despite its weight, the newly discovered planet has a radius only 1.2 times that of Jupiter, the study said. Its temperature is also far cooler than the sun, at 825 degrees Celsius. Some brown dwarfs have powerful auroras like those seen around the poles of Earth, Jupiter and Saturn caused by the interactions of a planet's magnetic field and the electrically charged solar wind.

But its magnetic field is something worth a closer look.

Nevertheless, we still can't figure out how brown dwarf stars get auroras, considering they're nowhere near any type of stellar winds. Kao's team hopes the weird "rogue" exoplanet might shed some light into the matter.

Scientists have made the first radio-telescope detection of a huge free-floating planet beyond our solar system, a new study said.

"We think these mechanisms can work not only in brown dwarfs, but also in both gas giant and terrestrial planets".

Study co-author Gregg Hallinan, an astronomer at Caltech, also chimed in on the discovery.

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