Science

Saturn Surprises Astronomers with a Jaw-Dropping 128 New Moons!

2025-03-13

Author: Jia

Get ready to have your mind blown! Saturn's celestial family has expanded dramatically, with the recent official recognition of 128 new moons, propelling the total moon count to a staggering 274! This astonishing number eclipses Jupiter's 95 moons and leaves Earth’s solitary moon feeling a bit lonely. (Don't worry, we still cherish our moon!)

The groundbreaking discovery was made by an international team of astronomers from Taiwan, Canada, the U.S., and France using the Canada France Hawaii Telescope (CFHT). These new moons were officially validated by the International Astronomical Union on March 11, 2023.

Most of these newly recognized moons are small and irregular in shape, measuring just a few miles across. In contrast, our moon boasts a diameter of 2,159 miles (3,475 kilometers). However, what sets these moons apart is that they have confirmed orbits around Saturn, a vital criterion for moon classification.

Dr. Brett Gladman from the University of British Columbia elaborates that these tiny moons are likely fragments of larger moons that were shattered by violent encounters either with other Saturnian moons or with passing comets, showcasing the dynamic and often chaotic nature of celestial mechanics.

This impressive discovery is not a first for this research team; they previously contributed to Saturn’s moon tally by adding 62 moons between 2019 and 2021. Dr. Edward Ashton, the lead researcher and a postdoctoral fellow at the Institute for Astronomy and Astrophysics at Academia Sinica, remarked, “With the knowledge that these were probably moons, and that there were likely even more waiting to be discovered, we revisited the same sky fields for three consecutive months in 2023. Sure enough, we found 128 new moons.”

Historically, Saturn's moon hunting began way back in 1655 with the discovery of Titan by astronomer Christiaan Huygens. Over the ensuing decades, other notable astronomers like Jean-Dominique Cassini and William Herschel identified several more, including Iapetus, Rhea, Dione, Tethys, Mimas, and Enceladus.

As technology has evolved—with significant advancements from photography and massive telescopes to the groundbreaking missions of Voyager 1, Voyager 2, and Cassini—our capacity to discover and observe celestial bodies has surged. This new batch of moons emphasizes how much we continue to learn about the universe.

However, there may be a limit to what we can find with current technology. Ashton indicated, “With current technology, I don’t think we can do much better than what has already been done for moons around Saturn, Uranus, and Neptune.” Could there be more discoveries waiting in the cosmic shadows? Only time will tell!