The Cassini spacecraft has observed methane rain on Titan's equatorial deserts, revealing the first current evidence of rain soaking Titan's surface at low latitudes. This finding suggests that recent weather on Titan is similar to Earth's tropical regions.
Scientists have discovered a new species of yeast, Saturnispora quitensis, in the Maquipucuna cloud forest in Ecuador. The yeast produces characteristic Saturn-shaped spores and has potential for fermentation of plant material to produce bio-energy.
Researchers using NASA's Cassini spacecraft have discovered thin, wispy clouds of ice particles similar to Earth's cirrus clouds on Titan's atmosphere. These clouds provide valuable insights into the workings of Titan's atmosphere and its one-way cycle that delivers hydrocarbons to the ground.
Recent research reveals significant changes in China's lakes over the past several decades, with a decline in lake surface area and number, and creation of new lakes. Climate change and human activity are contributing factors, highlighting the need for more detailed regional studies to confirm these observations.
Scientists have identified a cluster of deep low-frequency earthquakes along the San Andreas Fault, influenced by a Chilean earthquake. Additionally, satellite imagery reveals evidence of buried water ice near the Martian equator, contradicting previous research that Mars' current climate is inhospitable to equatorial water ice.
A cyclone on Saturn has been detected to last more than 5 years, making it the longest-lasting cyclone recorded on a giant planet. The cyclone, similar in size to Europe, was tracked using images from the Cassini probe and found to have a weak circulation with properties similar to its surroundings.
A team of researchers, including Washington University professor William B. McKinnon and associate professor Andrew Dombard, propose that Iapetus had a sub-satellite created by a giant impact, which eventually broke apart and formed the ridge. The study suggests that tidal forces played a crucial role in shaping the moon's unique feature.
Simulations suggest Saturn's rings and inner moons formed after a massive satellite collided with the planet. The resulting debris formed the icy rings and ice-rich inner moons.
Astronomers have discovered a fourth giant planet in the HR8799 system, which is approximately seven times the mass of Jupiter. The system, consisting of four giant planets and two asteroid belts, is young compared to our solar system and may be on the verge of falling apart due to gravitational interactions.
The newly discovered fourth planet (HR 8799e) orbits a bright star called HR 8799, which lies some 129 light years from Earth and is faintly visible to the naked eye. The mass of the HR 8799 planetary system is much greater than our own.
The discovery of the fourth giant planet in the HR 8799 system strengthens the resemblance between this exoplanetary system and our own, with all four planets being similar in size. Detailed study of HR 8799e will be challenging due to its relative faintness and proximity to its star.
The Cassini mission has discovered an oxygen atmosphere on Saturn's moon Rhea, which is extremely thin and sustained by high-energy particles bombarding its icy surface. The formation of oxygen and carbon dioxide could be a pre-requisite for life, with complex chemistry potentially common throughout the solar system.
Saturn's southern hemisphere emits more energy than its northern one, with variations seen in the planet's seasons and years. The Cassini CIRS instrument reveals Saturn is not losing power evenly, providing a new understanding of the planet's internal heat source.
According to a University of California, Berkeley study, nearly one in four sun-like stars could have Earth-size planets. The researchers found increasing numbers of smaller planets, down to super-Earths, about three times the mass of Earth.
Using new optics technology developed at the University of Arizona's Steward Observatory, astronomers have obtained images of a planet on a closer orbit around its parent star than any other extrasolar planet previously found. The discovery enables scientists to search for planets closer to the star than has been previously possible.
AUA-led team finds complex organic molecules, including amino acids and nucleotide bases, in Titan's atmosphere. These findings suggest that Titan's atmosphere could be a reservoir of prebiotic molecules that serve as the springboard to life.
Researchers propose that Enceladus' libration, a slight wobble as it rotates, could be responsible for generating heat and keeping its ocean liquid. This finding is significant in the search for life, as it suggests that the moon's environment may be stable enough to support development.
A team of astronomers from the University of Florida has discovered two Saturn-sized planets and a possible third planet with an Earth-like size orbiting a distant star. The discovery was made using a new method of confirming planets called transit timing variation, which allows for more efficient confirmation of planetary systems.
The discovery of two planets, Kepler 9b and 9c, confirms the first planetary system with more than one planet transiting the same star. The planets, both Saturn-sized gas giants, exhibit orbital resonance and gravitational interaction.
A team of researchers has discovered that Saturn's aurora pulses in tandem with its radio emissions, providing a long-suspected link between the two phenomena. The discovery offers new insights into Saturn's irregular heartbeat and has significant implications for understanding the planet's rotation period.
Researchers have discovered changes in lake levels on Titan, with the southern hemisphere experiencing a 1-meter-per-year drop in lake depth. The decrease is attributed to seasonal evaporation of liquid methane from lakes, which are composed mainly of this substance.
Researchers at University of Arizona successfully created nitrogenated organic molecules in a laboratory setting that mimics Titan's atmosphere. The findings suggest that complex organic molecules could be present on Titan, potentially creating conditions conducive to life.
Researchers used quantum simulations to study hydrogen's behavior under extreme pressure, discovering a discontinuous transition between molecular and atomic states. The critical point occurs at high temperatures and pressures, near 3100°F and 1 million atmospheres.
Researchers explored how prolonged droughts may affect California's water supply system. The study also revealed the first images of Saturn lightning, providing new insights into the planet's atmosphere. These findings suggest improved water management strategies could mitigate the effects of severe droughts on ecosystems and economies.
A new study by CU-Boulder researchers suggests that the thick organic haze surrounding early Earth may have protected it from damaging ultraviolet radiation. The haze, composed of methane and nitrogen chemical byproducts, would have blocked UV light but allowed visible light to reach the surface. This finding has significant implicatio...
Erlotinib maintenance therapy significantly improves progression-free and overall survival in patients with non-small-cell lung cancer. The treatment is generally well-tolerated, with mild to moderate side effects.
Cassini collected temperature map data that shows hot regions resembling 'Pac-Man' eating a dot and striking bands of light and dark in crater walls. Surface texture variations are suspected to be the cause, with denser ice conducting heat away from the surface.
Scientists at UC Berkeley propose helium rain as explanation for neon depletion in Jupiter's atmosphere, with helium droplets forming around 10,000 km below the surface and releasing heat that explains Saturn's excess brightness.
The Cassini spacecraft has provided stunning insights into Saturn's ring system, showing routine collisions and debris trails. The rings are composed mostly of water ice, with a mysterious reddish contaminant that could be rust or small organic molecules.
Corot-9b, a gas giant planet, has an interior similar to that of Jupiter and Saturn, allowing it to maintain liquid water. The planet's distance from its star and lack of tidal forces make this possibility plausible.
Astronomers have discovered a temperate exoplanet, Corot-9b, with a mass about 80% that of Jupiter and an orbit similar to Mercury's. The planet is thought to have a temperature range of -20°C to 160°C, making it a significant finding in the study of exoplanets.
An international team of scientists has discovered a new planet called CoRoT-9b, similar in size to Jupiter. Located 1500 light-years from Earth, the planet orbits a star similar to our sun and is considered temperate.
The massive planet WASP-12b is being torn apart by the gravitational forces of its host star, resulting in a 'death march' that explains its unusually large size. The research also suggests the presence of a super-Earth in the disk around the star.
The 2009 AAAS Newcomb Cleveland Prize was awarded to Christian Marois and colleagues for their direct imaging of multiple planets orbiting HR 8799, a distant star. The discovery, made using the Keck and Gemini North telescopes, reveals a system resembling our solar system's outer portion.
Researchers discover CoRoT-7b, an earth-like planet, is believed to be the rocky remains of a Saturn-sized gas giant. Computer models reveal that the planet's mass loss and tidal migration led to its transformation.
CoRoT-7 b is a rocky planet circling a star 480 light years from Earth, with temperatures above 4,000 degrees F on its surface and potentially hosting multiple volcanoes due to its close orbit. Its extreme volcanic activity makes it unlikely to harbor life.
Climate researchers have found that the Indian Ocean Dipole is occurring more frequently due to global warming, leading to extreme weather patterns. Meanwhile, a study in North America reveals that natural cooling factors contributed to an unusually cold year in 2008, contradicting claims of a prolonged cooling trend.
Researchers found evidence of fog at Titan's south pole, using Cassini data to isolate clouds and prove an active methane hydrological cycle. The discovery provides insight into Titan's atmosphere and its potential for liquid methane and ethane on the surface.
Recent NASA missions suggest conditions necessary for life may exist on the icy satellites of Saturn and Jupiter, particularly Europa and Enceladus. Liquid water beneath their surfaces could harbor life, with tidal forces keeping oceans from freezing up due to eccentric orbits.
Researchers found that Titan's ice is stronger as temperature decreases, allowing it to form an Earth-like landscape. The study used laboratory measurements to understand the impact of cold temperatures on ice erosion.
The Cassini spacecraft confirmed that reddish dust infalling on Saturn's moon Iapetus is responsible for its 'yin-yang' appearance. Water ice migration and evaporation also contribute to the extreme brightness differences between the two hemispheres.
Researchers suggest that the planet's oblong orbit exposes different areas of Titan to varying amounts of sunlight, affecting precipitation and evaporation cycles. This leads to an uneven distribution of lakes in the northern and southern polar regions.
During Saturn's equinox, light hits the ring particles at low angles, giving a three-dimensional view of the rings. The CIRS instrument on board the Cassini spacecraft observed record-low temperatures of 382 degrees below zero Fahrenheit in the A-ring.
Researchers from Johns Hopkins University present a new view of the region of the sun's influence, suggesting that the heliosphere may not have a comet-like shape. The Cassini spacecraft's images reveal that particle pressure and magnetic field energy density control the shape of the heliosphere.
Researchers created the first self-sustaining meander in a laboratory using alfalfa sprouts to represent vegetated stream banks. They found that vegetation on the outer bank is crucial for slowing down erosion and allowing bars to grow on the inner bank.
Researchers calculate that adding small amounts of lithium can convert hydrogen to a metal at significantly lower pressures. The study predicts the formation of metallic hydrogen compounds under experimentally accessible pressures.
The Lennart Nilsson Award recognizes Carolyn Porco and Babak A. Tafreshi for their stunning images of Saturn and the night sky, inspiring new generations of astronomers and photographers. Their work showcases the beauty of the universe, from the rings of Saturn to the stars in remote locations.
A UH Mānoa team led by Ralf Kaiser discovered triacetylene formation in Titan's atmosphere through simulation experiments and theoretical calculations. This finding sheds light on the origin and chemical evolution of Saturn's moon, which may serve as a building block for more complex polyynes.
New studies reveal dry years getting drier in Pacific Northwest, explore rainfall-humidity relationship, and analyze ancient solar cycles using radioactive tracers. These findings highlight the impact of climate change and solar activity on Earth's water cycle and atmosphere.
A new study by LSU professor Patrick Hesp and USGS scientist David Rubin suggests that Titan's linear dunes could be formed by single-direction winds due to cohesive sediment. This alternative hypothesis has significant implications for studying Titan's composition, origin, evolution, and surface features.
Researchers from Caltech have observed a large system of storm clouds on Titan, revealing clouds near the equator for the first time. The discovery has significant implications for understanding the hydrological cycle on Titan and challenges previous speculations about cloud formation in dry regions.
New University of Washington research suggests comets unlikely cause mass extinctions, contradicting long-held belief. The study shows that Jupiter and Saturn's gravitational fields protect Earth from most comets, limiting potential impact.
A new study led by Dr. Dave Stegman has shed light on the evolution of planets, revealing that Enceladus' tiger stripes are caused by tectonic activity and a subsurface ocean containing ammonia. The research suggests that Enceladus' unique chemical composition and interaction with other moons led to the formation of this dynamic system.
Numerical simulations show that comet-like objects in a disk outside the solar system were scattered into the outer asteroid belt during a violent phase of planetary evolution. The models suggest that dramatic upheaval occurred in the solar system around 3.9 billion years ago, affecting nearly every nook and cranny.
A recent study suggests that Saturn's moon Enceladus' water vapor jets originate from the surface and not an underground ocean. The research, conducted by the University of Colorado at Boulder, found that the sodium content in the water vapor was too low to support the geyser hypothesis.
Researchers detect sodium salts in Enceladus plume, confirming presence of salty ocean beneath moon's surface. The concentration of sodium chloride is estimated to be similar to Earth's oceans, with a concentration of 0.1-0.3 moles per kilogram of water.
Florida Institute of Technology professors Ming Zhang and Hamid Rassoul receive a $411,000 NASA grant to investigate the physics of particle transport in the distant heliosphere. The IBEX spacecraft mission will observe particles from beyond Pluto's orbit, providing insights into cosmic rays and future human space travel.
New research suggests Titan, Saturn's largest moon, has a subterranean ocean of hydrocarbons and unusual topography, including mountains with lower elevations than surrounding plains. The findings may help explain the presence of large lakes of hydrocarbons at both poles.
Scientists at Duke University have created intricate nano-structures by manipulating magnetization of a liquid solution, enabling the formation of complex shapes like Saturn and flowers. The resulting structures can be fixed and used as building blocks for various applications.
Scientists at Lawrence Livermore National Laboratory and the University of Illinois have determined the temperature at which helium becomes insoluble in dense metallic hydrogen. This finding has significant implications for models of the interior structure and evolution of Jovian planets, including Saturn and Jupiter.