[continued from part 1]
Answer: It is all connected to the approach of the rogue Planet X, aka Nibiru.
Washington Post article, Dec. 30, 1983 (of all places!):
"Possibly as Large as Jupiter"
https://www.washingtonpost.com/archive/politics/1983/12/30/possibly-as-large-as-jupiter/1075b265-120a-4d40-9493-a8c523b76927/?utm_term=.db350302cf58
"A heavenly body possibly as large as the giant planet Jupiter and possibly so close to Earth that it would be part of this solar system has been found in the direction of the constellation Orion by an orbiting telescope aboard the U.S. infrared astronomical satellite."
Note infrared. Planet X is ONLY visible in infrared and/or near-infrared.
NYT article January 30, 1983:
"IDEAS AND TRENDS; CLUES GET WARM IN THE SEARCH FOR PLANET X"
https://www.nytimes.com/1983/01/30/weekinreview/ideas-and-trends-clues-get-warm-in-the-search-for-planet-x.html
"Recent calculations by the United States Naval Observatory have confirmed the orbital perturbation exhibited by Uranus and Neptune, which Dr. Thomas C. Van Flandern, an astronomer at the observatory, says could be explained by a single undiscovered planet. He and a colleague, Dr. Robert Harrington, calculate that the 10th planet should be two to five times more massive than Earth and have a highly elliptical orbit that takes it some 5 billion miles beyond that of Pluto - hardly next-door but still within the gravitational influence of the Sun."
Definition of orbit: "the curved path of a celestial object or spacecraft around a star, planet, or moon, especially a periodic elliptical revolution."
Orbits REPEAT.
Scientists are discussing this again:
"New evidence in support of the existence of Planet Nine"
https://knowridge.com/2018/01/new-evidence-in-support-of-the-existence-of-planet-nine/
"Last year, the existence of an unknown planet in our Solar system was announced. […] Their calculations were motivated by the peculiar distribution of the orbits found for the trans-Neptunian objects (TNO) of the Kuiper belt, which apparently revealed the presence of a Planet Nine or X in the confines of the Solar System."
Mainstream articles on Planet X all the way back to the 1950s found here:
http://rabbithole2.com/news/top_news/huge_list_of_planet_x_news_stories_dating_back_to_the_50s.php
[continued in part 3]