Saturn’s rings are ‘relatively recent’
Belt of ice and rock was formed no more than 100 million years ago
Scientists have discovered that the distinctive rings surrounding Saturn may be far younger than had previously been thought.
Data obtained by Nasa’s Cassini spacecraft before its “death” in 2017 suggest the belt, one of the solar system’s most “magnificent sights”, was formed between 10 million and 100 million years ago, says Reuters.
To put that into perspective, dinosaurs were roaming the Earth 100 million years ago, the news site says, and their extinction is believed to have taken place some 66 million years ago.
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.
Saturn, meanwhile, was created when the solar system formed 4.5 billion years ago, the Daily Mail says.
Using the data, a team of scientists at the University of California were able to determine that the rings are “less than half as heavy” as Mimas, one of Saturn’s 62 moons, Metro reports.
This suggests that the rings are “relatively recent”, otherwise they would be heavier and less bright because they would have been “contaminated” by more space debris, the news site says.
Scientists have tried to calculate the age of Saturn’s rings before, but the lack of data available before Cassini meant that only vague estimates could be drawn.
Speaking to the BBC, Luciano Iess, professor of aerospace engineering at Sapienza University in Rome, said: “Previous estimates of the age of Saturn's rings required a lot of modelling and were far more uncertain.
“But we now have direct measurements that allow us to constrain the age very well.”
Although Jupiter, Neptune and Uranus have rings, Saturn’s are the most prominent to the naked eye and can easily be seen through a telescope.
The planet’s rings look “solid” to the naked eye, but the band is actually “translucent” and consists of “countless” ice and rock particles, according to The Atlantic.
“Some are no larger than a grain of sugar, others as enormous as mountains,” the US magazine says. They are “held in place by a delicate balance between Saturn’s gravity and their orbiting speed”.
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
-
What is cloud seeding and did it cause Dubai's severe rainfall?
The Explainer The future is flooded
By Devika Rao, The Week US Published
-
American Airlines pilots are warning of a 'significant spike' in safety issues
In the Spotlight The pilot's union listed 'problematic trends' they say are affecting the airline's fleet
By Justin Klawans, The Week US Published
-
6 star-spangled presidential libraries to visit
The Week Recommends These institutions provide insight into American leaders
By Catherine Garcia, The Week US Published
-
Nasa reveals first findings from asteroid that could explain origins of life
Speed Read Sample from Bennu has been found to contain an abundance of water and carbon
By Jamie Timson, The Week UK Published
-
Dark side of the Moon: will the race to lunar South Pole spark conflict?
Today's Big Question Russia and India are competing for the ‘new lunar gold’ – but real contest will be between the US and China
By The Week Staff Published
-
How worried we should be about space debris
feature As part of a rocket washes up in Australia scientists warn ‘critical mass’ of orbital junk could only be decades away
By The Week Staff Published
-
What is NASA's Artemis program?
Speed Read NASA's ambitious Artemis program will eventually create a base on the moon — and lay the foundations for manned missions to Mars
By Catherine Garcia Published
-
SpaceX launches 1st all-civilian crew into orbit
Speed Read
By Catherine Garcia Published
-
Is SpaceX's Inspiration4 really an inspiration?
Talking Point
By Jeva Lange Published
-
Jeff Bezos' Promethean impulse
Talking Point
By Damon Linker Published
-
The benefits of billionaires in space
opinion This is how innovation begins
By James Pethokoukis Published