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The object was discovered back in 2016 but it has now been described as a "rogue planet" after scientists determined it was moving on its own, without an orbiting star. It is travelling through space unaccompanied by any parent star.

This rogue planet is believed to be quite young, 200 million years old and it is now placed at 20 light-years from us.

The massive planet is 20 light years away from Earth. Brown dwarfs, hard to categorise, are too huge to be classified as planets and not big enough to be classified as stars.

Determining the exact boundary between the classifications of planet and brown dwarf is still under debate, but many scientists use the mass 13 times the size of Jupiter. This meant that the object was much less massive and that he could be free-floating planet is just 12.7 times the mass and radius of 1.22 times the size of Jupiter. It has a surface temperature of about 825 degrees Celsius.

The researchers say they are stumped by auroras dancing above the planet's poles.

Pope ready to emulate England team mate Curran
When I bat at six sometimes I come in in the 10th over and sometimes I come in with the second new ball. It's not like it hasn't been done before. "I don't think it'll be any different for India".

This is the first planetary mass object detected with a radio telescope. That's why they had problems in establishing its nature, oscillating between calling it a planet or a "failed" star, as brown dwarfs are called. However, the Astrophysical Journal features new research which shows that the object is considered a planet, just one that has an unusually strong magnetic field.

Astronomers using NSF's Karl G. Jansky Very Large Array have detected a "rogue" planetary-mass object with a surprisingly powerful magnetic field.

This finding could help to better understand the magnetic processes of stars and planets, Kao believes.

Auroras on Earth, known as the northern and southern lights, rely on a constant flow of energetic charged particles coming from the Sun, called solar wind.

"Such a 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 astronomer Gregg Hallinan. "We think these mechanisms can work not only in brown dwarfs, but also in both gas giant and terrestrial planets". However, when another team looked at the brown dwarf data they realised one of the objects, dubbed SIMP J01365663+0933473, was far younger than the others.