Astronomers looking for a ninth planet within our solar system claim they have identified a promising candidate situated well past Neptune, as stated in a recent preliminary research paper.
This might represent humanity’s initial look at the theorized Planet Nine, assuming this massive, unseen celestial body actually orbits our Sun from afar. Nevertheless, the hypothesis about the ninth planet remains controversial, and these recent discoveries probably won’t alter that fact.
Scientists stumbled upon this new potential planet as they were reviewing archival satellite data. For now, the object appears merely as an intriguing speck in several infrared photographs. However, its movement suggests characteristics aligning with those expected of a massive, remote celestial body.
The study’s primary author expressed great excitement,
Terry Phan
, a PhD candidate in astronomy at the National Tsing Hua University in Taiwan, mentioned
Science
, reflecting on the discovery. “This has really inspired us greatly.”
Phan and his team uploaded their discoveries to the preprint server.
arXiv
On April 24, these findings were accepted for publication in the journal Publications of the Astronomical Society of Australia. Nevertheless, the preliminary version has encountered some doubt.
Mike Brown
, an astronomer at Caltech who co-proposed the Planet Nine hypothesis in 2016 with a fellow researcher, remains unconvinced that these infrared spots indicate the presence of the hypothesized planet. Although he was not part of the research team, Brown computed the trajectory of the detected infrared signals and discovered that the celestial body responsible for them might have an inclination of approximately 120 degrees relative to the plane of our solar system. This angle significantly exceeds the expected tilt range of Planet Nine, estimated between 15 to 20 degrees, as noted by Science magazine. Moreover, such a high orbital tilt suggests that this potential new entity moves in a completely distinct path compared to most recognized planets within the solar system, whose orbits align closely with each other.
same plane
.
This discrepancy “does not imply its absence, just that it’s not Planet Nine,” Brown explained to Science. “In my opinion, this planet wouldn’t exert any of the influences on our Solar System that we believe we’re observing.”
Related:
How long would it take to reach Planet 9, if we ever find it?
The anticipated location of Planet Nine is supposed to account for the unusual paths of certain bodies within the Kuiper Belt at the outer edges of our solar system. Nonetheless, several scientists remain skeptical that this phenomenon is due to an unseen planet, and the broader scientific community continues to await concrete observations confirming Planet Nine’s presence.
Should Planet Nine indeed exist, scientists forecast that it would be considerably bigger than our planet and follow an atypical orbit far beyond several billion miles from the sun.
Neptune
— the eighth planet in our solar system, and potentially the last one according to current knowledge. Planet Nine orbits at such an extreme distance from the Sun that detecting it has proven challenging for terrestrial astronomers, which explains their difficulty in confirming whether it exists or not.
The researchers working on this latest study looked through the data records from two retired satellites—the 1983 Infrared Astronomical Satellite (IRAS) and the 2006-2011 AKARI satellite—to find potential candidates for Planet Nine, as reported by Live Science’s affiliated website.
Space.com
It was reported. They searched for far-off objects that showed gradual movement from one dataset to the subsequent one, similar to how the hypothesized Planet Nine might move if it orbited our Sun.
Having excluded the recognized items within their dataset, the scientists narrowed down their list to a select group of possibilities. Upon meticulously examining photographs from this reduced pool of prospects, they ultimately identified an entity referred to in their research as “a strong contender.” This subject appears as a single point exhibiting identical hues and luminosity levels in both series of photos, indicating it might be one celestial body observed independently by different spacecrafts. Further investigations will still have to take place to fully chart the trajectory of this item, as stated in the report.
Brown informed Science that if the detected infrared signal indicates a planet, his computations suggest it would not coexist stably with the originally proposed Planet Nine due to orbital disruptions. Consequently, this newly suggested Planet Nine might represent an alternative celestial body capable of challenging the existence of Planet Nine as theorized earlier.
The presence of Planet Nine—or another unknown ninth planet within our solar system—will probably continue to spark debate for some time. Nonetheless, 2025 might mark the start of resolving this mystery once and for all.
The
Vera C. Rubin Observatory
Currently being built in Chile, this advanced facility is set to launch later this year and could potentially resolve the controversy surrounding Planet Nine. The cutting-edge observatory will house the planet’s biggest digital camera and explore farther into space than previous models. Scientists anticipate that it might detect Planet Nine within one to two years, assuming the planet exists at all.
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