What a parting gift the Cassini mission gave us.
Below is a movie sequence of images, garnered from the final dedicated observation of the Enceladus’ geysers by the imitable Cassini spacecraft.
Continue reading “Watch: 14 Hours of Enceladus Geyser Action”
Even though the Cassini mission at Saturn ended nearly four years ago, data from the spacecraft still keeps scientists busy. And the latest research using Cassini’s wealth of data might be the most enticing yet.
Researchers say they’ve detected methane in the plumes of Saturn’s icy moon Enceladus. The process for how the methane is produced is not known at this time, but the study suggests that the surprisingly large amount of methane found are likely coming from activity at hydrothermal vents present on Enceladus’s interior seafloor. These vents could be very similar those found in Earth’s oceans, where microorganisms live, feed on the energy from the vents and produce methane in a process called methanogenesis.
Continue reading “Cassini Saw Methane in Enceladus’ Plumes. Scientists Don’t Know How it Could be There Without Life”
Saturn’s rings are one of the most recognized and revered celestial objects known to the human race. From a distance, they look like a disk of layered crystal or multicolored disks within disks that wrap around Saturn’s hazy umber face. When viewed up close, we see that these rings are actually particles of water ice (from microns to icebergs), as well as silicates, carbon dioxide, and ammonia.
We would also noticed that the rings have some interesting orbital mechanics. In fact, each ring has a different orbit that is the result of its proximity to Saturn (i.e., the closer they are, the faster they orbit). To illustrate what this complex system look like, NASA Fellow Dr. James O’Donoghue created a stunning animation that shows how each of Saturn’s major ring segments (A-Ring to F-Ring) orbit together around the planet.
Continue reading “Animation Shows how Saturn’s Rings Move at Different Speeds”
Beyond Earth, the general scientific consensus is that the best place to search for evidence of extraterrestrial life is Mars. However, it is by no means the only place. Aside from the many extrasolar planets that have been designated as “potentially-habitable,” there are plenty of other candidates right here in our Solar System. These include the many icy satellites that are thought to have interior oceans that could harbor life.
Among them is Titan, Saturn’s largest moon that has all kinds of organic chemistry taking place between its atmosphere and surface. For some time, scientists have suspected that the study of Titan’s atmosphere could yield vital clues to the early stages of the evolution of life on Earth. Thanks to new research led by tech-giant IBM, a team of researchers has managed to recreate atmospheric conditions on Titan in a laboratory.
Continue reading “Titan’s Atmosphere Recreated in an Earth Laboratory”
A new study of the mysterious hexagon-shaped storm at Saturn’s north pole suggests this phenomenon is actually the result of activity occurring across the entire planet.
Continue reading “Simulation Helps Explain Saturn’s Mysterious Hexagon”
Scientists have learned a lot about the atmospheres on various worlds in our Solar System simply from planetary sunrises or sunsets. Sunlight streaming through the haze of an atmosphere can be separated into its component colors to create spectra, just as prisms do with sunlight. From the spectra, astronomers can interpret the measurements of light to reveal the chemical makeup of an atmosphere.
Continue reading “Sunrises Across the Solar System”
Titan’s methane-based hydrologic cycle makes it one of the Solar System’s most geologically diverse bodies. There are lakes of methane, methane rainfall, and even “snow” made of complex organic molecules. But all of that detail is hidden under the moon’s dense, hazy atmosphere.
Now a team of scientists have used data from the Cassini mission to create our first global geological map of Titan.
Continue reading “Scientists Construct a Global Map of Titan’s Geology”
Some lakes on Titan have ring-like shapes around them, and scientists are trying to find out how they formed. Understanding how they formed may tell us something about how the entire region they’re in, including the lakes, formed. The ring-shaped features are found around pools and lakes at Titan’s polar regions.
Continue reading “There are Ring-Like Formations Around the Lakes on Titan”
The Cassini mission to Saturn ended a year and a half ago, but scientific results are still coming from all of the data it collected. When Cassini moved in closer to Saturn in its final months, it took a very detailed look at the gas giant’s rings, travelling between them and the planet itself. That detailed inspection raised quite a few questions about all the interactions shaping those rings.
A new paper published in Science presents some of the results from Cassini’s close-up look at the rings.
Continue reading “Stunning Image Shows How Saturn’s Tiny Moon Sculpts the Planet’s Rings”
Can you imagine the Solar System without Saturn’s rings? Can you envision Earth at the time the dinosaurs roamed the planet? According to a new paper, the two may have coincided.
Data from the Cassini mission shows that Saturn’s rings may be only 10 to 100 million years old. They may not have been there during the reign of the dinosaurs, and may in fact be a fairly modern development in our Solar System.
Continue reading “Saturn’s Rings are Only 10 to 100 Million Years Old”