MAY 28, 2018 6:06 PM PDT

Did 1 Billion Comets Form Pluto?

WRITTEN BY: Anthony Bouchard

New Horizons flew past Pluto almost three years ago, giving planetary scientists their closest look yet at one of the most fascinating dwarf planets to exist in the entire solar system. Nevertheless, so many questions about the tiny and distant world go unanswered, even today.

Among them is how Pluto formed, and while scientists have proposed a myriad of ideas over the years, that doesn’t keep new theories from rolling off the assembly line. One of the latest to hit the table is the notion that a billion or more comets accumulated into a single, more substantial body over time. The new idea appears in the journal Icarus.

An image of Pluto, captured by NASA's New Horizons spacecraft during the 2015 fly-by mission.

Image Credit: NASA

The dead giveaway, as it seems, was the chemical composition Sputnik Planitia on Pluto’s surface; namely within the left lobe of the light, heart-shaped region that appears in multiple New Horizons photographs.

"We found an intriguing consistency between the estimated amount of nitrogen inside the glacier and the amount that would be expected if Pluto was formed by the agglomeration of roughly a billion comets or other Kuiper Belt objects similar in chemical composition to 67P, the comet explored by Rosetta," explained study lead author Christopher Glein from the Southwest Research Institute (SwRI).

Related: Could Pluto become a planet again?

It’s an intriguing idea given just how much in common Pluto appears to have with comet 67P. And it’s reinforced by the fact that the Kuiper Belt is chock full of icy comet-like objects, known to the scientific community as Kuiper Belt Objects (KBOs).

Then again, the new theory is still just that: a theory. It doesn’t entirely dismiss all other philosophies, nor does it prove itself in its entirety; it’s merely another potential solution to a problem that remains unsolved.

"This research builds upon the fantastic successes of the New Horizons and Rosetta missions to expand our understanding of the origin and evolution of Pluto," Glein added.

"Using chemistry as a detective's tool, we are able to trace certain features we see on Pluto today to formation processes from long ago. This leads to a new appreciation of the richness of Pluto's 'life story,' which we are only starting to grasp."

Related: A planetary haze keeps Pluto colder than expected

Researchers still have a lot more work to do if they want to understand Pluto’s puzzling past fully. Nevertheless, the drive to answer this mind-boggling question motivates experts to keep searching for answers.

Source: Science Alert

About the Author
  • Fascinated by scientific discoveries and media, Anthony found his way here at LabRoots, where he would be able to dabble in the two. Anthony is a technology junkie that has vast experience in computer systems and automobile mechanics, as opposite as those sound.
You May Also Like
NOV 14, 2020
Space & Astronomy
Evidence of Supernovae Found in Ancient Tree Rings
NOV 14, 2020
Evidence of Supernovae Found in Ancient Tree Rings
Researchers from the University of Colorado Boulder have found that the rings in Earth's ancient trees may hold evid ...
JAN 05, 2021
Space & Astronomy
Could Earth's Microbes Help Us Find Extraterrestrial Life?
JAN 05, 2021
Could Earth's Microbes Help Us Find Extraterrestrial Life?
As scientists are learning more about microbes existing in the higher echelons of the Earth's atmosphere, they are b ...
MAY 01, 2021
Space & Astronomy
Small Galaxies Played Key Role in Evolution of the Universe
MAY 01, 2021
Small Galaxies Played Key Role in Evolution of the Universe
Astrophysicists from the University of Minnesota have found evidence for the theory that small galaxies emitting high-en ...
MAY 23, 2021
Space & Astronomy
Why Do Some Stars Vanish from Space?
MAY 23, 2021
Why Do Some Stars Vanish from Space?
Current theories suggest that stars undergo changes on timescales of millions or billions of years, and that their end i ...
MAY 29, 2021
Space & Astronomy
First Matter in the Universe Flowed Like Tap Water
MAY 29, 2021
First Matter in the Universe Flowed Like Tap Water
In two separate studies, researchers led by those at the University of Copenhagen and Queen Mary University of London fo ...
JUN 05, 2021
Space & Astronomy
Did Heat from Asteroids Provide the Building Blocks for Life on Earth?
JUN 05, 2021
Did Heat from Asteroids Provide the Building Blocks for Life on Earth?
Researchers from Kobe University in Japan have found that heat generated by the impact of small astronomical bodies coul ...
Loading Comments...