Planet X

Cosma / Communication / Knowledge / Realm / Physical / Universe / Solar System / Scattered Disc / Planet X

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Introduction1

Is there a mysterious Planet Nine lurking in our solar system beyond Neptune? (Charlie Wood, Washington Post)
The Super Earth that Came Home for Dinner (NASA/JPL)

Encyclopedia

In 1894, with the help of William Pickering, Percival Lowell, a wealthy Bostonian, founded the Lowell Observatory in Flagstaff, Arizona. In 1906, convinced he could resolve the conundrum of Uranus’s orbit, he began an extensive project to search for a planet beyond Neptune, which he named Planet X, a name previously used by Gabriel Dallet. The X in the name represents an unknown and is pronounced as the letter, as opposed to the Roman numeral for 10 (at the time, and now, Planet X would be the ninth planet). — Wikipedia

Portal

Solar System Exploration: Hypothetical Planet X (NASA)

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Innovation

Science

Caltech Researchers Find Evidence of a Real Ninth Planet (Caltech)
Solar Obliquity Induced by Planet Nine (Elizabeth Bailey, Konstantin Batygin, Michael E. Brown, arXiv.org)

Hypothesis

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Preservation

Library

WorldCat, Library of Congress, UPenn Online Books, Open Library

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Participation

Community

Organization

International Astronomical Union (IAU)
Minor Planet Center (International Astronomical Union)

News

Phys.org, NPR Archives

Book

ISBNdb

Government

Document

USA.gov

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More News …

Phys.org - latest science and technology news stories Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.

  • No European Mars mission this year, due to war in...
    on March 17, 2022 at 2:13 pm

    Because of Russia's invasion of Ukraine, Europe is going to have to wait at least several more years and may need NASA's help before its first planned Mars rover can drill into the planet's dusty surface, seeking signs of whether it ever hosted life.

  • Using cell phone networks to monitor volcanic...
    on March 10, 2022 at 11:45 am

    A paper published February 9 in Earth, Planets and Space by Japanese earth science researchers analyzed the potential of a dense Global Navigation Satellite System (GNSS) network, which is installed at cell phone base stations, to monitor crustal deformation as an early warning indicator of seismic activity. The results showed that data from a cell phone network can rival the precision of data from a government-run GNSS network, while providing more complete geographic coverage.

  • NASA begins assembly of Europa Clipper spacecraft
    on March 3, 2022 at 8:14 pm

    Science instruments and other hardware for the spacecraft will come together in the mission's final phase before a launch to Jupiter's icy moon Europa in 2024.

  • NASA selects futuristic space technology concepts...
    on February 28, 2022 at 1:54 pm

    An astronaut steps into a body scanner and, hours later, walks on Mars in a custom-made spacesuit, breathing oxygen that was extracted from Mars' carbon dioxide-rich atmosphere. On Venus, an inflatable bird-like drone swoops through the sky, studying the planet's atmosphere and weather patterns. Ideas like these are currently science fiction, but they could one day become reality, thanks to a new round of grants awarded by NASA.

  • Nine dead as Storm Eunice batters Europe
    on February 18, 2022 at 1:25 pm

    Storm Eunice killed at least nine people in Europe on Friday, pummelling Britain with record-breaking winds and forcing millions to take shelter as it disrupted flights, trains and ferries across Western Europe.

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Related

Here are links to pages about closely related subjects.

Knowledge Realm

Physical

“Fundamentals”
Law (Constant) Relativity
Force Gravity, Electromagnetism (Light, Color)
Matter (Microscope) Molecule, Atom (Periodic Table), Particle

“Space”
Universe (Astronomical Instrument)
Galaxy Milky Way, Andromeda
Planetary System Star, Brown Dwarf, Planet, Moon

Our Neighborhood
Solar System Sun
Terrestrial Planet Mercury, Venus, Earth (Moon), Mars
Asteroid Belt Ceres, Vesta
Jovian Planet Jupiter, Saturn, Uranus, Neptune
Trans-Neptunian Object
Kuiper Belt Pluto, Haumea, Makemake
Scattered Disc Eris, Sedna, Planet X
Oort Cloud Etc. Scholz’s Star
Small Body Comet, Centaur, Asteroid

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Notes

1.   The resources on this page are are organized by a classification scheme developed exclusively for Cosma.