Huygens also directly sampled aerosols in the atmosphere and confirmed that carbon and nitrogen are their major constituents. This four-panel infographic demonstrates a key chemical process believed to occur in the atmosphere of Saturn’s moon Titan. 1) Titan has a thick, nitrogen (N 2 ) atmosphere that also contains methane (CH 4 titan v price ). Researchers propose that vesicles could form in Titan’s hydrocarbon lakes, hinting at a new pathway for life’s precursors.
For a look ahead at more upcoming sky events, check out our full Sky This Week column. “The way a sub operates is that you load it up with weight at the top … so that on the surface it’s heavy and that drags it down through the water column down to the bottom,” one expert tells PEOPLE. “There are no words to ease the loss endured by the families impacted by this tragic incident,” she said, “but we hope that this hearing will help shed light on the cause of the tragedy and prevent anything like this from happening again.” Making multiple flights, the Dragonfly rotorcraft will explore a variety of locations on Saturn’s moon Titan.
A similar process occurred on Mars, where water molecules were broken up and the resulting hydrogen lost to space. A recent NASA study, published in the International Journal of Astrobiology, describes a possible way stable vesicles could develop on Titan, drawing on current knowledge of the moon’s atmospheric and chemical makeup. Creating these enclosed structures is considered a key step toward producing the building blocks of living cells (or protocells). Unlike Mars, where there were multiple orbiters to collect high-resolution surface data about potential landing sites, NASA only has imagery from the Cassini spacecraft that explored the Saturnian system from 2004 to 2017. Fortunately, this spacecraft deployed a small European probe, Huygens, that landed on Titan in 2005 and survived for about an hour. Dragonfly will draw on the experiences and atmospheric data collected by Huygens.
Air- and spacecraft
The spacecraft will explore impact craters where water may have existed in liquid form for thousands of years after meteors struck and imparted a significant amount of kinetic energy. The shadow of Saturn’s largest moon Titan will skim across the gas giant’s swirling cloud tops in the early morning hours of Sept. 4. Here’s everything you need to know about how to catch the rare transit event. Titan, the largest moon of Saturn, is named for the Titans of Greek mythology, which include Cronus (equated with the Roman god Saturn) and his 11 siblings. Titan is larger than the planet Mercury and more massive than Pluto, and, in significant ways, it resembles a planet more than it does a typical moon.
Colossal moon Titan casts a shadow on Saturn’s cloud tops early on Sept. 4. Will you be able to see it?
The entirety of the event will be visible to amateur astronomers in the U.S., who will find Saturn lurking below the stars of the constellation Pisces above the southern horizon in the early hours of Sept. 4. Titan was discovered telescopically in 1655 by Dutch scientist Christiaan Huygens. It was the first planetary satellite to be discovered after the four Galilean moons of Jupiter.
- The surface of Titan is one of the most Earthlike places in the solar system, albeit at vastly colder temperatures and with different chemistry.
- It is the sole other place in the solar system known to have an earthlike cycle of liquids raining from clouds, flowing across its surface, filling lakes and seas, and evaporating back into the sky (akin to Earth’s water cycle).
- Huygens called his discovery “Luna Saturni,” which is Latin for Saturn moon.
- After that, we’ll have to wait another 15 years until Saturn’s rings are brought back into alignment with Earth to see the second largest moon in our solar system cast its silhouette over the majestic gas giant.
- Scientists had determined it had a nitrogen atmosphere—the only known world with a dense nitrogen atmosphere besides Earth.
Plains and dunes
“For the first time we can see the chemical cake while it’s rising in the oven, instead of just the starting ingredients of flour and sugar, and then the final, iced cake,” said co-author Stefanie Milam of the Goddard Space Flight Center. Titan, Saturn’s largest moon and the second-largest in the solar system, is unique in being the only moon with a dense, substantial atmosphere. Saturn draws attention tonight as its largest and brightest moon, Titan, slips behind the disk of the planet late this evening in an occultation. You can find Saturn just over 30° high in the southeast tonight, shining at magnitude 0.6 in Pisces. It’s easy to find without optical aid as the brightest point of light in this region of the sky.
Next Month Is Your Last Chance To See Titan’s Shadow Transit Saturn For 15 Years
- Because of this Juno incited the Titans to rebel against Jupiter and restore Saturn (Cronus) to the kingship of the gods.
- Researchers propose that vesicles could form in Titan’s hydrocarbon lakes, hinting at a new pathway for life’s precursors.
- This will be NASA’s first landing on another ocean world, with the primary objective of searching for the chemical building blocks of life.
- Saturn’s largest moon, Titan, is an icy world whose surface is completely obscured by a golden hazy atmosphere.
- Anthony Wood joined Space.com in April 2025 after contributing articles to outlets including IGN, New Atlas and Gizmodo.
Webb and Keck used different infrared filters to probe to different depths in Titan’s atmosphere, allowing astronomers to estimate the altitudes of the clouds. The science team observed clouds that appeared to move to higher altitudes over a period of days, although they were not able to directly see any precipitation occurring. NASA’s Dragonfly rotorcraft will launch to Titan in 2028, and spend three years making multiple landings to investigate prebiotic chemical processes and complex organic compounds that, on Earth, are the building blocks of life.
Don’t Miss a Discovery
Like Earth, Titan’s atmosphere is primarily nitrogen, plus a small amount of methane. It is the sole other place in the solar system known to have an earthlike cycle of liquids raining from clouds, flowing across its surface, filling lakes and seas, and evaporating back into the sky (akin to Earth’s water cycle). Cassini followed up Huygens’ measurements from space, detecting other chemicals that included propylene (a chemical used to make household plastic) and poisonous hydrogen cyanide, in Titan’s atmosphere. The variety of chemicals observed indicates a rich and complex chemistry originating from methane and nitrogen and evolving into complex molecules, eventually forming the smog that surrounds the icy moon. It is believed that methane and ethane rain falls from clouds in Titan’s atmosphere, but the ultimate source of the methane is still unclear.
Cassini revealed that Titan experiences a dynamic weather system that continues to shape its surface today. The atmosphere is composed primarily of nitrogen, with a notable proportion of methane (CH₄). This methane condenses into clouds and produces rain, which falls to the surface, carving river channels and contributing to erosion before collecting in lakes and seas. Under sunlight, the liquid evaporates back into the atmosphere, forming clouds once more.
Because Titan is less massive than Earth, its gravity doesn’t hold onto its gaseous envelope as tightly, so the atmosphere extends to an altitude 10 times higher than Earth’s—nearly 370 miles (600 kilometers) into space. The methane in Titan’s atmosphere is what makes its complex atmospheric chemistry possible, but where all that methane comes from is a mystery. Because sunlight continuously breaks down methane in Titan’s atmosphere, some source must be replenishing it or it would be depleted over time. Researchers suspect methane could be belched into Titan’s atmosphere by cryovolcanism—volcanoes releasing chilled water instead of molten rock lava—but they’re not certain if this or some other process is responsible.
Saturn’s largest moon, Titan, is named after the Titans generally, and the other moons of Saturn are named after individual Titans, specifically Tethys, Phoebe, Rhea, Hyperion, and Iapetus. Astronomer William Henry Pickering claimed to have discovered another moon of Saturn which he named Themis, but this discovery was never confirmed, and the name Themis was given to an asteroid, 24 Themis. Among the key technologies on Dragonfly is an advanced Terrain Relative Navigation system to survey the surface and identify hazards.
“The most interesting question is why is there still lots of methane in the atmosphere of Titan? ” said Jonathan Lunine, a Cassini interdisciplinary scientist from Cornell University. We now know that Titan is a world with lakes and seas composed of liquid methane and ethane near its poles, with vast, arid regions of hydrocarbon-rich dunes girdling its equator. Until the Cassini mission, little was known about Saturn’s largest moon Titan, save that it was a Mercury-sized world whose surface was veiled beneath a thick, nitrogen-rich atmosphere. But Cassini mapped Titan’s surface, studied its atmospheric reactions, discovered liquid seas there and even sent a probe to the moon’s surface, completely rewriting our understanding of this remarkably Earth-like world. NASA’s James Webb Space Telescope, supplemented with images from the Keck II telescope, has for the first time found evidence for cloud convection in Titan’s northern hemisphere, over a region of lakes and seas.