Solar system 'could contain ten or more planets', say scientists
New study suggests 'Planet Nine' could actually be one of several different worlds far beyond Pluto
The solar system may actually hold ten or 11 planets, according to a new study which poses questions for the researchers who detected evidence of "Planet Nine" earlier this year.
In January, Konstantin Batygin and Mike Brown from the California Institute of Technology (Caltech) claimed there was an icy world far beyond the dwarf planet of Pluto and believed to be up to four times as large and ten times as massive as Earth.
The astronomers inferred its existence from the movement of other objects in the solar system. Unusual movement of six large objects in the Kuiper belt suggested they were being influenced by the gravitational effects of a hidden planet.
Subscribe to The Week
Escape your echo chamber. Get the facts behind the news, plus analysis from multiple perspectives.
Sign up for The Week's Free Newsletters
From our morning news briefing to a weekly Good News Newsletter, get the best of The Week delivered directly to your inbox.
From our morning news briefing to a weekly Good News Newsletter, get the best of The Week delivered directly to your inbox.
Now those orbits have led scientists from Cambridge University and Spain to believe there could also be a Planet Ten and even Eleven, reports the Daily Telegraph.
Sverre Aarseth, from the Institute of Astronomy at Cambridge, and Spanish astronomers Carlos and Raul de la Fuente Marcos say the orbit of Planet Nine does not match up with the orbits of the Kuiper belt objects and so there has to be more large planets influencing them.
"We believe that in addition to a Planet Nine, there could also be a Planet Ten and even more," said Carlos de la Fuente Marcos.
However, not everyone is convinced by the findings.
"I think it's way too early to start speculating about a second planet but, in general, I am confused by their results," Caltech's Brown told the Daily Mail.
"We have a nearly identical analysis which shows nearly the opposite result. It is not obvious to me why they would get such a different answer."
Create an account with the same email registered to your subscription to unlock access.
Sign up for Today's Best Articles in your inbox
A free daily email with the biggest news stories of the day – and the best features from TheWeek.com
-
Did a federal snafu break college admissions?
Today's Big Question FAFSA's botched rollout creates chaos for college-bound seniors
By Joel Mathis, The Week US Published
-
Crossword: May 8, 2024
The Week's daily crossword
By The Week Staff Published
-
Sudoku hard: May 8, 2024
The Week's daily hard sudoku puzzle
By The Week Staff Published
-
What is NASA working on?
In Depth A running list of the space agency's most exciting developments
By Devika Rao, The Week US Published
-
14 recent scientific breakthroughs
In Depth From photos of the infant universe to an energy advancement that could save the planet
By Devika Rao, The Week US Published
-
The hunt for Planet Nine
Under The Radar Researchers seeking the elusive Earth-like planet beyond Neptune are narrowing down their search
By Chas Newkey-Burden, The Week UK Published
-
Winchcombe meteorite: space rock may reveal how water came to Earth
The Explainer New analysis of its violent journey confirms scientific theories on the origin of our planet's H2O
By Sorcha Bradley, The Week UK Published
-
Why the Moon is getting a new time zone
The Explainer The creation of 'coordinated lunar time' is part of Nasa's mission to establish a long-term presence on Earth's only natural satellite
By Richard Windsor, The Week UK Published
-
We're in the golden age of space exploration
In depth To infinity and beyond!
By Devika Rao, The Week US Published
-
All the major moon landings so far
The Explainer One giant leap for mankind
By Devika Rao, The Week US Published
-
Jupiter's Europa has less oxygen than hoped
speed read Scientists say this makes it less likely that Jupiter's moon harbors life
By Peter Weber, The Week US Published