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Cassini Data Reveals Saturn's Rings Extend Far Beyond What Telescopes Can See Cassini's Grand Finale Unlocks New Clues About Saturn's Ring System In 2017 , NASA's Cassini spacecraft entered its dramatic final phase, known as the Grand Finale Orbits (GFOs) , before deliberately plunging into Saturn's atmosphere. During these daring passes, Cassini gathered dust samples from both above and below the planet's rings using its Cosmic Dust Analyzer (CDA) . A newly published study in The Planetary Science Journal now reveals that the data suggests Saturn's iconic rings stretch far beyond their seemingly razor-thin appearance when viewed through telescopes. Readers interested in landmark space missions and deep-space discoveries can explore more coverage at FSNews365 , which frequently reports on planetary science and spacecraft findings. Striking Compositional Similarities Found in High-Latitude Dust Cassini Records 1,690 Dust Spectra During its 20 orbits , C...

Revolutionary Lunar Origin Theory Challenges Decades-Old Planetary Science Models Long-Standing Mystery: How the Moon Really Formed One of the longest-standing mysteries in planetary science is how the Moon came into being. More than a century ago, George Darwin suggested that powerful tidal and centrifugal forces acting on a rapidly spinning proto-Earth caused the Moon to break away and settle into orbit around the planet. However, the idea later conflicted with the laws of conservation. A proto-Earth rotating with a day lasting just two to three hours would have possessed roughly four times the angular momentum of the present Earth-Moon system, raising the question of where that excess momentum went. Theia Impact: The Dominant Modern Hypothesis The leading explanation that emerged instead proposes that a Mars-sized object, dubbed Theia, collided with the proto-Earth. The impact ejected material from both bodies into orbit, where it eventually clumped together to form the Moon. When ...

Scientists Discover Traces of Proto-Earth Hidden Deep Within Ancient Rocks MIT Team Uncovers 4.5 Billion Year Old Clues to Earth's Primordial Origins Scientists from MIT and collaborating institutions have uncovered extraordinarily are traces of "proto-Earth," dating back around 4.5 billion years — before a monumental collision reshaped the young planet and gave rise to the Earth we know today. Their findings, published in Nature Geoscience , offer vital clues to the primordial materials that built the early Earth and the wider solar system. Billions of years ago, our solar system existed as a vast, swirling disc of gas and dust. Over time, this matter coalesced into primitive meteorites, which gradually merged to create proto-Earth and its neighbouring planets. During this early phase, Earth was likely a molten, lava-covered world. Less than 100 million years later, a Mars-sized body struck the young planet in a colossal "giant impact," melting its interior a...

New Research Cracks the Mystery Behind the Solar System's Giant Planet Winds For decades, the spectacular equatorial jet streams of our solar system's gas giants   —  Jupiter, Saturn, Uranus and Neptune  —   have fascinated and baffled astronomers alike. Why do some of these enormous worlds spin with fierce eastward winds , while other blow dramatically westward? Now, a team led by researchers from Leiden Observatory and SRON Netherlands Institute for Space Research may have found the answer. Their new model, published in Science Advances , is the first capable of explaining the atmospheric circulation patterns on all four of these colossal planets  —  revealing that the same underlying physics drives both directions of wind. (Related reading: Earth's Climate and Atmospheric Changes   —  explore how Earth's jet streams compare to those of the gas giants.) One Unified Model for a Solar System-Wide Puzzle The breakthrough study, led by postdocto...

New Study Reveals Majority of Earth's Meteorites Originate from a Singular Source Introduction: The Allure of Fireballs The sight of a fireball blazing across the sky captivates both children and adults, serving as a vivid reminder of Earth's place in a vast, dynamic universe. Approximately 17,000   fireballs enter Earth's atmosphere each year, with many surviving the descent to the surface, offering scientists rare o p portunities to study these extraterrestrial objects. Meteorites: Understanding Their Origins While scientists recognize that some meteorites originate from the Moon and Mars, most are asteroid-derived. Today, two studies in Nature  take this understanding further. The research, led by Miroslave Bro ž  from Charles University, Czech Republic, and Micha ë l Marsset from the European Southern Observatory, Chile, sheds new light on these cosmic origins. The studies trace the origin of most meteorites to a few asteroid breakup events — and possibly even s pec...