This video from the USA says about itself:
27 January 2016
Planet 9 is the biggest astronomical “discovery” of recent memory, and the process of calculating its existence is revealed with astronomer Konstantin Batygin. When speculation of a large body of mass with an usual orbital alignment was detected, astronomers took to computer simulations, mathematical equations and a call to the public to discover the small gassous giant on the fringes of our solar system. Batygin breaks down this hypothesized planet that is estimated to be between 1 to 10 times the mass of the Earth, along with the Kuiper Belt, the discovery of Neptune, and why Dr. Mike Brown deemed Pluto no longer a planet in this episode of Antidote hosted by Michael Parker.
Coined the next “physics rock star” by Forbes, Konstantin Batygin immigrated to the U.S. from Russia at age 13 and currently works as an Assistant Professor of Planetary Sciences at Caltech. Batygin landed on the 2015 Forbes list of 30 scientists under 30 who are changing the world with an unprecedented record of publishing 21 papers as first author. He’s discovered planets in other solar systems and solved a centuries-old puzzle: yes, it turns out eventually the planets in the solar system will careen away from the sun. Batygin also plays in a rock band.
From Science News:
These 2016 stories could be really big — if they’re true
Some scientific findings this year made a big splash but require more evidence
By Cassie Martin
10:00am, December 23, 2016
These findings would have rocked the scientific world, if only the evidence had been more convincing.
New Planet 9 clues
A giant planet lurking at the outskirts of the solar system could explain the odd orbits of far-flung hunks of icy debris (SN: 2/20/16, p. 6). If the planet exists, its average distance from the sun would be between 500 and 600 times Earth’s distance (SN: 7/23/16, p. 7).
Signs of ancient life
Mounds of minerals discovered in Greenland appear to have been deposited by clusters of microbes 3.7 billion years ago. If so, these stromatolites represent the oldest fossilized evidence of life on Earth (SN: 10/1/16, p. 7).
Lucy’s big fall
A controversial study claims that Lucy, the most famous fossil in the study of human evolution, died after falling from high up in a tree (SN: 9/17/16, p. 16). The autopsy supports the hypothesis that Australopithecus afarensis split its time between the ground and the trees.
Nucleus with no charge
Researchers have spotted signs of a “tetraneutron,” an atomic nucleus with four neutrons but no protons (SN: 3/5/16, p. 10). If confirmed, this first-of-its-kind nucleus might be explained by a new, interneutron force.