Saturn TOP STORY

Cassini Sees Northern Clouds Returning to Titan

© NASA/JPL-Caltech/Space Science Institute

Northern Clouds Return to Titan

As NASA's Cassini spacecraft sped away from Titan following a relatively close flyby, its cameras monitored the moon's northern polar region, capturing signs of renewed cloud activity.


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Saturn Dwarfs Tiny Moon Epimetheus and Larger Rhea

© NASA/JPL-Caltech/Space Science Institute; G. Ugarković

Saturn Dwarfs Tiny Moon Epimetheus and Larger Rhea.

Saturn has a great many more moons than our planet - a whopping 62. A single moon, Titan, accounts for an overwhelming 96% of all the material orbit the planet, with a group of six other smaller moons dominating the rest. The other 55 small satellites whizzing around Saturn make up the tiny remainder along with the gas giant's famous rings.

Saturn's Polar Vortex and Rings

Saturn's Polar Vortex and Rings

The Cassini spacecraft captures three magnificent sights at once: Saturn's north polar vortex and hexagon along with its expansive rings.


Atlas Seen Emerging From Darkness

Atlas Seen Emerging From Darkness

The Cassini spacecraft captures a glimpse of the moon Atlas shortly after emerging from Saturn's shadow. Although the sunlight at Saturn's distance is feeble compared to that at the Earth, objects cut off from the Sun within Saturn's shadow cool off considerably.


Cassini Reveals 101 Geysers on Enceladus

Cassini Reveals 101 Geysers on Enceladus

This artist's rendering shows a cross-section of the ice shell immediately beneath one of Enceladus' geyser-active fractures, illustrating the physical and thermal structure and the processes ongoing below and at the surface.


Saturn Imitates the Moon

Saturn Imitates the Moon

Saturn appears to Cassini's cameras as a thin, sunlit crescent in this unearthly view. Citizens of Earth, being so much closer to the Sun than Saturn, never get to enjoy a view of Saturn like this without the aid of our robot envoys.


The Moon Eclipses Saturn

The Moon Eclipses Saturn

What happened to half of Saturn? Nothing other than Earth's Moon getting in the way. As pictured above on the far right, Saturn is partly eclipsed by a dark edge of a Moon itself only partly illuminated by the Sun.


Ocean on Saturn's Moon Titan Could be as Salty as the Dead Sea

Ocean on Saturn's Moon Titan Could be as Salty as the Dead Sea

Scientists analyzing data from NASA's Cassini mission have firm evidence the ocean inside Saturn's largest moon, Titan, might be as salty as the Earth's Dead Sea.


Cassini Names Final Mission Phase Its 'Grand Finale'

Cassini Names Final Mission Phase Its 'Grand Finale'

With input from more than 2,000 members of the public, team members on NASA's Cassini mission to Saturn have chosen a name for the final phase of the mission: the Cassini Grand Finale.


Titan's Building Blocks Might Pre-date Saturn

Titan's Building Blocks Might Pre-date Saturn

A combined NASA and ESA-funded study has found firm evidence that nitrogen in the atmosphere of Saturn's moon Titan originated in conditions similar to the cold birthplace of the most ancient comets from the Oort cloud. The finding rules out the possibility that Titan's building blocks formed within the warm disk of material thought to have surrounded the infant planet Saturn during its formation.


Prometheus Interacts With Saturn's F Ring

Prometheus Interacts With Saturn's F Ring

Prometheus is caught in the act of creating gores and streamers in the F ring. Scientists believe that Prometheus and its partner-moon Pandora are responsible for much of the structure in the F ring.


Titan's Polar Vortex

Titan's Polar Vortex

Titan's polar vortex stands illuminated where all else is in shadow. Scientists deduce that the vortex must extend higher into Titan's atmosphere than the surrounding clouds because it is still lit in images like this.


Sunsets on Titan Reveal the Complexity of Hazy Exoplanets

Sunsets on Titan Reveal the Complexity of Hazy Exoplanets

Scientists working with data from NASA's Cassini mission have developed a new way to understand the atmospheres of exoplanets by using Saturn's smog-enshrouded moon Titan as a stand-in.


Evidence That Saturn's Collapsing Magnetic Tail Causes Auroras

Evidence That Saturn's Collapsing Magnetic Tail Causes Auroras

University of Leicester researchers have captured stunning images of Saturn's auroras as the planet's magnetic field is battered by charged particles from the Sun.


Saturn's Rainbow Rings

Saturn's Rainbow Rings

This colourful cosmic rainbow portrays a section of Saturn's beautiful rings, four centuries after they were discovered by Galileo Galilei.


Birth of New Moon for Saturn?

Birth of New Moon for Saturn?

NASA's Cassini spacecraft has documented the formation of a small icy object within the rings of Saturn thatmay be a new moon, and may also provide clues to the formation of the planet's known moons.


Help Name Cassini's New Mission

Help Name Cassini's New Mission Video in Story

As NASA's Cassini mission approaches its 10th anniversary at Saturn, its team members back here on Earth are already looking ahead to an upcoming phase.


Enceladus Has An Underground Sea

Enceladus Has An Underground Sea

Saturn's icy moon Enceladus has an underground sea of liquid water, according to the international Cassini spacecraft.



More top stories from August.