Planets beyond Neptune
id:
planets-beyond-neptune-209-2869691
title:
Planets beyond Neptune
text:
Following the discovery of the planet Neptune in 1846, there was considerable speculation that another planet might exist beyond its orbit. The search began in the mid-19th century and continued at the start of the 20th with Percival Lowell's quest for Planet X. Lowell proposed the Planet X hypothesis to explain apparent discrepancies in the orbits of the giant planets, particularly Uranus and Neptune, speculating that the gravity of a large unseen ninth planet could have perturbed Uranus enough
brand slug:
wiki
category slug:
encyclopedia
description:
Hypothetical planets further than Neptune
original url:
https://en.wikipedia.org/wiki/Planets_beyond_Neptune
date created:
2001-08-26T23:39:47Z
date modified:
2024-09-11T14:40:29Z
main entity:
{"identifier":"Q2803875","url":"https://www.wikidata.org/entity/Q2803875"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/c/ca/Percival_Lowell_observing_Venus_from_the_Lowell_Observatory_in_1914.jpg","width":800,"height":1000}
fields total:
13
integrity:
16