Hypothetical Planet X - NASA Science
Astronomers studying the Kuiper Belt have noticed some of the dwarf planets and other small, icy objects in that region tend to follow orbits that cluster together. By analyzing these orbits, the Caltech team predicted the possibility that a large, previously undiscovered planet may be hiding far beyond Pluto.
In Depth | Hypothetical Planet X - NASA Solar System Exploration
2015年1月20日 · Caltech researchers have found mathematical evidence suggesting there may be a "Planet X" deep in the solar system. This hypothetical Neptune-sized planet orbits our Sun in a highly elongated orbit far beyond Pluto.
Caltech Researchers Find Evidence of a Real Ninth Planet
2 天之前 · Caltech researchers have found evidence of a giant planet tracing a bizarre, highly elongated orbit in the outer solar system. The object, which the researchers have nicknamed Planet Nine, has a mass about 10 times that of Earth and orbits about 20 times farther from the sun on average than does Neptune (which orbits the sun at an average ...
The Case Strengthens for Planet 9 | News | Astrobiology
2 天之前 · The race is on to find the giant planet that several teams of astronomers are convinced orbits far out beyond Pluto, but is nonetheless still part of our Solar System. Proving the existence of what has become known as Planet X, or Planet 9, would be a discovery for the textbooks and would inevitably change our understanding of how our Solar ...
NASA/JPL Eyes - Solar System Interactive
NASA’s Solar System Interactive (also known as the Orrery) is a live look at the solar system, its planets, moons, comets, and asteroids, as well as the real-time locations of dozens of NASA missions.
[2410.18170] Orbit of a Possible Planet X - arXiv.org
2024年10月23日 · We calculate the long-term orbital stability of distant trans-Neptunian objects (TNOs), which allows us to expand the sample of objects that would carry dynamical information about a hypothetical unseen planet in the outer solar system.
Planets beyond Neptune - Wikipedia
He calculated that any Planet X would be at roughly three times the distance of Neptune from the Sun; its orbit would be highly eccentric, and strongly inclined to the ecliptic—the planet's orbit would be at roughly a 32-degree angle from the orbital plane of the other known planets. [46]
There's one last place Planet Nine could be hiding - Phys.org
2024年2月19日 · A study recently submitted to The Astronomical Journal continues to search for the elusive Planet Nine (also called Planet X), which is a hypothetical planet that potentially orbits in the...
Hubble Pins Down Weird Exoplanet with Far-Flung Orbit - Science@NASA
2020年12月10日 · A planet in an unlikely orbit around a double star 336 light-years away may offer a clue to a mystery much closer to home: a hypothesized, distant body in our solar system dubbed "Planet Nine." This Hubble Space Telescope image shows one possible orbit (dashed ellipse) of the 11-Jupiter-mass exoplanet HD 106906 b.
NASA’s Webb Confirms Its First Exoplanet
2023年1月11日 · Researchers confirmed an exoplanet, a planet that orbits another star, using NASA’s James Webb Space Telescope for the first time. Formally classified as LHS 475 b, the planet is almost exactly the same size as our own, clocking in at 99% of Earth’s diameter.