A Glowing Rogue Planet Was Spotted Drifting Near Our Solar System

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In 2016, scientists stumbled upon a massive object just beyond our solar system, which they believed was a ‘failed’ brown dwarf star. Now, a paper published in the Astrophysical Journal has reclassified it as a rogue planet and it’s got some pretty bizarre characteristics.

Given the rather boring, scientific moniker SIMP J01365663+0933473, this newly classified planet is just below the threshold of brown-dwarfdom, typically set at 13 times the size of Jupiter. Weighing in at a mere 12.7 times the size of Jupiter, this mega-planet also has a magnetic field 200 times stronger than the gas giant we know. And it’s floating through space, untethered to any star.

Scientists observed some bright and powerful auroras near the planet’s polar regions due to its intense magnetic field – think the Northern Lights like you’ve never seen them before. This happens when charged solar particles bombard the planet, before being ionized by its magnetosphere.

The planet is relatively young, about 200 million years-old, and is drifting about 20 light-years away from us – a relatively short distance on a cosmic scale.

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Artist’s representation of SIMP Credit:Credit: Caltech/Chuck Carter; NRAO/AUI/NSF

 

Sometimes rogue planets can become “captured” by another star and join the ranks of its solar system. This planet is currently being pulled by the gravitational force at our galactic center, but if it came close enough to our sun it could be sucked into its gravitational pull. In this scenario, a rogue planet might find itself crashing into other planets in our neighborhood, knocking into them like a pool cue and causing mass chaos.

This is unlikely to happen with SIMP, but scientists believe there could be a multitude of these rogue planets floating through the galaxy and occasionally wreaking havoc on unsuspecting solar systems, ahem, Nibiru?

The discovery of SIMP came about through the detection of its strong auroral radio emissions and scientists hope to use this method to discover more rogue planets. It would have been nearly impossible to have detected it otherwise, due to its lack of a parent star.

As we find more of these rogue planets in our cosmic region, it will hopefully tell us more about our place in the galaxy and what our future trajectory looks like. This prospect is exciting as long as we don’t find ourselves on a terminal collision course.



A Massive Meteor Hit Earth Last Year; Almost No One Noticed

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A massive meteor explosion over the Bering Sea three months ago went completely unnoticed until just now, when scientists reviewed low-frequency acoustic wave data picked up by global recording stations. The 32-foot diameter meteor exploded on Dec. 18, releasing 173 kilotons of energy – about 10 times that of the atomic bomb dropped on Hiroshima.

This latest meteor explosion was the second largest impact in the past 30 years, coming in behind the Chelyabinsk meteor of 2013 which caused a number of injuries and was widely captured on video.

But unlike Chelyabinsk, this recent explosion took three months to be detected by a scientist studying infrasound data, which is inaudible to humans, but recorded by 16 monitoring stations around the world. The explosion is even being compared to the Tunguska event of 1908, during which a meteorite leveled an area of Siberia that included somewhere in the range of 80 million trees.

The explosion occurred in an incredibly remote area of the planet over an ocean where, luckily, no air traffic was passing through at that moment. But the fact that meteors this size with devastating potential, can enter the atmosphere almost undetected is a little unsettling.

While it wasn’t witnessed or officially recognized until now, footage from a Japanese weather satellite happened to capture an image of the explosion as it entered the atmosphere between Russia and Alaska.

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The meteor explosion caught by the Japanese Himawari-8 satellite Simon Proud, University of Oxford/Japan Meteorological Agency

 

Scientists often refer to a meteorite this size as a city-buster due to its potential to level an entire city, and bolides this size tend to enter our atmosphere a few times per century.

Reassuringly, most of the larger asteroids floating in our general vicinity have been mapped out and are regularly monitored by scientists at various observatories – even if we don’t necessarily have the means to deflect them if they were on a crash course with Earth.

But these mid-size rocks are particularly troubling, especially as man-made space debris can lead to collisions and changes in trajectory.

The technology and cataloging of 90 percent of all near-Earth asteroids larger than 450 feet in diameter is underway, but may take several decades. But these are only the rare nation-busters that would wipe out an entire country; mapping out all of the smaller city-busters is something that hasn’t really been considered, if it’s even possible.

Seems like it might be time someone builds a machine learning algorithm to do that for us.

 

For more on near-miss asteroids check out this episode of Beyond Belief with Dan Durda:

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