" Planets 4 hours ago
Planet Nine may exist, but it might be hiding behind Neptune
Evidence for Planet Nine continues to mount, but there may be a good reason why scientists have yet to find it – it may be hiding.
In October 2017, NASA released a statement saying that Planet Nine may be 20 times further from the Sun than Neptune is, going so far as to say "it is now harder to imagine our solar system without a Planet Nine than with one."
But the reason it may not yet have been found is due to that same distance. At that distance, the equivalent, of 600 astronomical units (1 AU is defined as the distance between the Earth and the Sun, or approximately 93 million miles), it would be 160,000 times dimmer than Neptune is. Kevin Luhman, an astronomer at Pennsylvania State University, told the Washington Post that at 1,000 AU, it's a "brick wall, basically," making any potential planet next to impossible to see using current technology.
NASA SAYS EVIDENCE FOR 'PLANET NINE' IS MOUNTING
However, scientists believe the possibility of another planet, one which may have "10 times the mass of Earth," does indeed exist...."
More at link.
(If this is a duplicate post, as I thought I had posted it, then my computer mouse is sick.)
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