Articles tagged with Planet Earth
Researchers at Imperial College London found that around half of Earth's zinc inventory came from asteroids in the outer Solar System, contributing to the emergence of life on Earth. The study suggests that this material supplied other important volatiles like water, crucial for sustaining life.
Researchers have discovered that primitive meteorites contain a different mix of potassium isotopes than those found in other, more-chemically processed meteorites. This suggests that the Solar System was formed from a 'poorly mixed cake batter' of materials, with some planets receiving a unique blend of elements from distant sources.
Researchers have successfully replicated the type of gravity that exists on or near stars and planets using a glass sphere measuring 3 cm in diameter. This achievement could help scientists understand and predict how solar weather affects spacecraft and satellite communications systems.
The article highlights that forests are not just threatened by agricultural expansion, but also by the consumption of non-agricultural products and international trade. Intact forests play a crucial role in regulating climate and biodiversity, and their loss can have significant indirect impacts on carbon emissions and biodiversity loss.
The MEDA instrument aboard the Perseverance rover has provided high-precision meteorological measurements of Mars' atmosphere, revealing seasonal and daily cycles as well as dynamic phenomena like dust devils. The analysis sheds light on the Martian climate and its potential for supporting life.
A new study by Brown researchers reveals that changes in tectonic plate thickness impact the location of the Denali Fault, a major strike-slip fault. The findings provide key insights into how geological faults behave as they deepen, shedding light on earthquake hazards.
A recent study found that soil microbes are releasing less CO2 in the summer due to decreased food availability, threatening their viability. However, autumn leaves mitigate this effect, but fewer dead leaves lead to a reduction in microbial biomass during the summer.
Researchers detect radio signal from record-breaking distance galaxy, measuring gas composition and gaining insights into the early universe. The signal was amplified by a factor of 30 using gravitational lensing, allowing scientists to study a previously inaccessible region.
A team of researchers has developed a system that uses fibre-optic cables to detect and measure acoustic signals from the ocean, including whale vocalizations, ship traffic, earthquakes, and distant storms. This technology has the potential to create a global real-time monitoring network for Ocean-Earth sciences.
A new book argues that the belief in human exceptionalism contributes to environmental degradation. The authors contend that this mindset is analogous to racism and has led to the extinction of many species. They propose a more inclusive approach, valuing all life forms equally and recognizing our place within the natural world.
A study by Brown researchers reveals how climate change can impact the Indian Ocean dipole, leading to extreme weather events like megadroughts in East Africa and flooding in Indonesia. The analysis compares long-term climate data with simulations from an advanced climate model.
A new study reveals that climate warming can reduce the burial of organic carbon beneath the ocean, leading to increased atmospheric carbon release. Researchers analyzed over 50 years of seafloor sediment cores, finding a significant decrease in organic carbon burial during certain periods, particularly during the mid-Miocene era.
Scientists at Washington University in St. Louis found that manganese oxides can be formed without atmospheric oxygen under Mars-like conditions. The study, published in Nature Geoscience, used kinetic modeling to show that halogens like chlorate and bromate can convert manganese into minerals thousands of times faster than by oxygen.
A new method reveals that small vascular plants, not trees, played a greater role in reducing atmospheric CO2 levels. The study suggests that weathering, a process that involves the breakdown of minerals, is a more effective way to remove CO2 from the atmosphere.
Researchers created a magneto-impedance sensor magnetometer that measures Earth's geomagnetic field fluctuations, enabling real-time monitoring of space weather and advancement of space research. The device is lightweight, power-efficient, and low-cost, making it suitable for constructing multi-point observation networks.
The largest earthquake on Mars, a 4.7 magnitude marsquake, revealed layers in the crust suggesting a massive meteoroid impact, with possible alternating volcanic and sedimentary rocks. This finding provides evidence for past collision events that shaped the planet.
Astronauts in space can lose up to 20% of muscle mass after two weeks due to microgravity. Researchers are exploring the use of extracellular vesicles, which contain restorative chemicals, to trigger post-exercise recovery without traditional exercise.
New research on asteroid samples from Ryugu reveals similarities to Ivuna-like carbonaceous chondrites, providing a better understanding of the early solar system. The study also sheds light on the accretion of volatiles during planetary formation and finds that Ryugu-like material accounts for ~5-6% of Earth's mass.
Researchers have observed long, web-like plasma structures in the Sun's middle corona, which discharge particles into space through interactions within the structures. This innovative observation method could lead to a better understanding of the solar wind's origins and its interactions with the rest of the solar system.
Researchers at UMass Amherst calculated pre-agricultural soil erosion rates in the Midwest, finding them to be 0.04 mm per year, significantly lower than the USDA's current limit of 1 mm per year. Modern agriculture has accelerated erosion rates, threatening topsoil and global food security.
Research shows that the Southwestern North American megadrought caused a significant reduction (~30%) in wave activity after its onset, which may be related to reduced storm generation and altered precipitation patterns. The findings demonstrate that regional changes in the lower atmosphere can impact the upper atmosphere.
Astronomers have discovered a mysterious bright flash emanating from a relativistic jet of matter streaking out from a supermassive black hole. The signal, AT 2022cmc, is the brightest TDE ever detected and originates from a black hole that suddenly began devouring a nearby star, releasing an enormous amount of energy.
An international research team proposes using engineered nanoparticles to fertilize ocean plankton, encouraging growth and carbon dioxide uptake. The approach has been shown to be safe and effective in enhancing plankton growth through controlled release of nutrients.
Scientists discovered that the first complex, multicellular life forms on Earth were wiped out 550 million years ago due to oxygen loss in the oceans. The researchers used nearly every known Ediacaran animal's environment and habits to disprove previous explanations for their disappearance.
A recent study from the University of Copenhagen reveals that Mars was once covered in a 300-metre-deep ocean, filled with water and icy asteroids carrying biologically important molecules. This finding suggests that conditions allowing the emergence of life were present on Mars long before Earth.
Scientists have confirmed the existence of a 'stabilizing feedback' mechanism that regulates Earth's temperature over hundreds of thousands of years. Silicate weathering is believed to be the likely cause, drawing carbon dioxide out of the atmosphere and into ocean sediments.
Wynne's work identifies key questions and answers needed to study Martian caves, which could hold secrets of life and provide insights into Earth's formation. Caves may also serve as radiation shielding for astronaut habitats on the Moon and Mars.
A new study documents past changes in Earth's climate system by analyzing dust composition in samples collected from different areas and depths of the same glacier. The findings suggest that a complete dust record could offer more secrets than scientists realize, hinting at potential long-term perspectives on the Central Asian dust cycle.
A team of researchers used images from the Hubble Space Telescope to determine the age and composition of a distant supernova. The study suggests that the heavier atomic elements necessary for life were created inside stars and released during supernovae explosions.
A new study finds that achieving access to minimum resources and services for all while safeguarding the Earth system requires redistribution and societal transformations. The research shows that the wealthiest individuals and societies must undergo transformative change to mitigate climate impacts, while the poor are not the primary c...
A study led by Gabriel Filippelli suggests that the evolution of tree roots during the Devonian Period caused massive algae growth, depleting ocean oxygen and triggering mass extinctions. The researchers found that tree roots released excess nutrients into the oceans during times of decay, leading to catastrophic events.
A study by Linköping University finds that current measurement methods are insufficient for reducing emissions and meeting the Paris Agreement's 2°C target. The researchers highlight the need for cheap and easy-to-use methods to track all types of greenhouse gas emissions at a local level.
A new study by Virginia Tech geobiologists reveals that a major loss of diversity occurred during the Ediacaran Period, resulting in an 80% extinction of animals. The researchers attribute this event to decreased global oxygen availability, suggesting that environmental controls played a role in shaping animal life on Earth.
Researchers analyzed fluid dynamics and electrically conducting fluids to conclude the Earth must have been magnetized before or as a result of its formation. This discovery could help narrow down theories on the Earth-Moon system, with implications for future research.
An international team has discovered three near-Earth asteroids, including one that is 1.5 kilometers wide and may someday threaten Earth's path. The observations were made possible by the unique capabilities of the Dark Energy Camera mounted on the Víctor M. Blanco 4-meter Telescope at Cerro Tololo Inter-American Observatory.
Scientists warn that climate change is at the door and pounding hard due to rising global temperatures, natural disasters, and infectious diseases. The report highlights urgent need to protect nature, eliminate fossil fuel emissions and support socially just climate adaptations.
A new Harvard-led study has found evidence of early plate tectonics and the flipping of Earth's magnetic poles, which may have created a more conducive environment for life. The research suggests that the planet's surface was moving at a rate of 6.1 centimeters per year, consistent with modern plate tectonics.
A joint study by TAU and Hebrew University accurately dated 21 destruction layers at 17 archaeological sites in Israel, using geomagnetic field reconstruction. The new data verify Biblical accounts of Egyptian, Aramean, Assyrian, and Babylonian military campaigns against the Kingdoms of Israel and Judah.
A new system classifies atmospheres of distant planets to identify those suitable for future human habitation, without physically visiting them. The research study found that planet TRAPPIST-1e has a significantly more sensitive atmosphere than Earth, which could lead to extreme climate changes.
Researchers have developed a method to map an asteroid's interior structure based on its spin changes during close encounters with Earth. This technique, called AIME, could help scientists plan more effective defense strategies for asteroids like Apophis, which poses a significant hazard if it were to make impact.
A new dataset provides an unprecedented insight into the Arctic Ocean's biological life, revealing a year's worth of microbial communities and their responses to climate change. The EcoOmics dataset aims to guide conservation efforts and provide evidence for novel biology that may influence our understanding of evolution on Earth.
Researchers find that airborne chemical methyl bromide is a compelling indicator of biological activity on other planets. Its detectability increases around M dwarf stars, making it an attractive target for future missions to search for extraterrestrial life.
Researchers have identified a potential source of shock-darkened meteorites, which could explain discrepancies in how near-Earth asteroids are classified. The asteroid, 1998 OR2, is about 1.5 miles wide and shows characteristics that suggest it has undergone shock darkening.
Researchers propose nitrous oxide as a potential biosignature for exoplanets, detectable by the James Webb Space Telescope. They modeled N2O production on Earth-like planets and found it could be comparable to CO2 or methane in star systems like TRAPPIST-1.
Researchers found that the return of radiolarians, a tiny marine organism, helped restore habitable conditions after the massive extinction event. The study suggests that every microorganism plays a vital role in regulating biogeochemical cycles and conservation of the planet.
Researchers found a way for peptide-forming reactions to occur in water, solving a decades-long puzzle about early Earth chemistry. The process requires rapid reactions on the margins of water droplets, where amino acids can transform into life's building blocks.
Cornell researchers have helped NASA's Dragonfly mission prepare for a smooth landing on Saturn's moon Titan by analyzing radar images of the Selk crater region. The team characterized the landscape, gauging the rim height of the crater and understanding its geology.
A Curtin-led research team found asteroid impacts on the Moon millions of years ago coincide with large meteorite impacts on Earth, such as the one that wiped out dinosaurs. The study also reveals that major impact events on Earth were accompanied by smaller impacts, providing new insights into asteroid dynamics.
Researchers at Cornell University suggest that bright reflections on Mars' South Pole may be caused by layered composition rather than liquid water. The team's simulations showed that layer thickness and separations have a greater impact on reflection power than material composition.
A team of researchers led by Goethe University Frankfurt analyzed a diamond from Botswana, revealing significant amounts of water stored in the transition zone. The discovery has far-reaching consequences for the dynamic situation inside the Earth, potentially altering global material circulation.
Scientists from the University of Rochester have provided a more accurate simulation of the impact that formed Earth’s largest crater two billion years ago. The new research suggests the impactor was much larger, about 20 to 25 kilometers in diameter, and traveling at a velocity of 15 to 20 kilometers per second.
A new paper challenges the 'Carter argument', suggesting life on Earth increases the probability of abiogenesis elsewhere. The author argues that the existence of life on Earth is old evidence that should be treated as such.
Researchers used the Advanced Photon Source to study asteroid fragments from Ryugu, finding they were made of water and carbon dioxide ice. The analysis suggests the asteroid formed over 4 billion years ago in the outer solar system, with a hydrated interior and dryer surface.
Researchers at Michigan State University have made significant contributions to our understanding of the nitrogen cycle, a complex process that underlies the balance of nitrogen in the environment. The team, led by Timothy Warren, has uncovered new pathways and reactions involved in the conversion of nitric oxide to nitrous oxide.
Researchers have discovered that Mexican mangrove forests have been absorbing and storing carbon for an impressive 5,000 years. The study found that these unique ecosystems are capable of retaining large amounts of carbon due to the presence of certain microorganisms.
Researchers in Japan analyzed Byzantine Empire texts to identify five total solar eclipses near Eastern Mediterranean. This study improves understanding of the Earth's rotation and sheds light on variations in day length over time. The new data refine models of global phenomena, such as sea-level and ice-volume variability.
A new study suggests that massive volcanic eruptions were the primary cause of mass extinctions, including the one that wiped out the dinosaurs. The research found a strong temporal connection between flood basalt eruptions and significant climatic events.
A new study suggests that Earth's habitability could increase if Jupiter's orbit becomes more eccentric, leading to parts of the surface warming up and becoming habitable for multiple life forms. The researchers also found that this change in Jupiter's orbit could have implications for the search for habitable planets around other stars.
A new study reveals that many exoplanets around M-dwarf stars may be composed of half water and half rock, rather than having surface oceans. The discovery suggests that these planets are likely to have water embedded in the rock or in pockets below the surface.
Scientists have developed a new solar-powered laser with improved conversion efficiency, enabling more stable and efficient space-based energy generation. The design features four mirrors and laser rods, allowing for precise control over the pump cavity and minimizing thermal stress effects.