Articles tagged with Planet Earth
A new study estimates that violent winds and shock waves are the most deadly effects of an asteroid impact, accounting for over 60% of lives lost. The study ranked seven effects associated with asteroid impacts and found that tsunamis accounted for 20% of casualties, while seismic shaking was the least concerning.
The Wildlife Conservation Society emphasizes the importance of science in wildlife conservation, citing numerous examples including the prevention of American Bison extinction and forest elephant population recovery. Science informs their work through research papers, protected areas establishment, and policy development.
Astronomers have revealed extraordinary details about 2014 UZ224, also known as DeeDee, using ALMA. The icy body is roughly 635 kilometers across and has enough mass to be spherical, but lacks official dwarf planet status.
New night lights maps offer daily, high-definition views of Earth at night, allowing for real-time monitoring of human activities, power outages, and environmental changes. The data can aid short-term weather forecasting, disaster response, and research on urbanization and economic changes.
The study detects iron, magnesium, and sodium ions in the Martian upper atmosphere, indicating a permanent presence of metal ions. The team believes that all solar system planets with substantial atmospheres likely have metal ions.
The Hubble Space Telescope captured the largest planet in our solar system, Jupiter, at unprecedented resolution. The telescope revealed exquisite details in Jupiter's atmosphere, including small-scale storm systems and wind patterns that reach speeds of up to 400 miles per hour.
Scientists reconstruct past climate records from Tibetan Plateau sediment samples, revealing a greater than 6 million year earlier onset of 100,000 year climate cycles. The findings suggest that Antarctic ice sheet fluctuations in the late Miocene exerted dominant control on these cycles.
Researchers are creating the first images of a supermassive black hole's event horizon using an Earth-sized telescope. The project aims to test predictions from Einstein's general relativity theory by studying the shadow, mass, and spin of the black hole.
Researchers using NASA's Chandra X-ray Observatory detected a brief, intense X-ray flare from a small galaxy 10.7 billion light years away. The source is thought to be either a gamma-ray burst not directed towards Earth or the destruction of a white dwarf star, but its exact nature remains unknown.
Researchers discovered Rossby waves on the sun, similar to jet streams on Earth, which may allow for long-term space weather forecasting. The waves drive solar flares and coronal mass ejections, enabling predictions of flare occurrences.
The Van Allen Probes detected an increase in oxygen particles speeding around Earth's dayside after a geomagnetic storm, shedding light on particle origins. The unique double observations help untangle the complex workings of Earth's magnetic environment.
Researchers at Georgia Institute of Technology found that Titan's non-silicate granules become electrically charged when kicked up by wind, causing them to cling together and resist further motion. This property helps explain the formation of large sandy dunes on Titan's surface, which are unlike anything seen on Earth.
A team of scientists has discovered large-scale planetary waves on the Sun, which may influence space weather and offer a new source of predictability. The discovery uses data from multiple satellites to identify and track coronal bright points, revealing bands of magnetized activity that propagate slowly across the Sun.
During the three-month campaign, scientists will validate GOES-16's advanced instruments using measurements from planes, ground-based sensors, unmanned aircraft systems, the International Space Station, and other sources. The goal is to ensure precise data for weather forecasting, severe storm warnings, and space weather predictions.
New NASA research on Mars volcano Arsia Mons suggests its peak volcanic activity occurred around 150 million years ago, similar to the time of Earth's Cretaceous-Paleogene extinction event that led to the demise of dinosaurs. The study provides valuable insights into the Red Planet's history and interior structure.
The study suggests that Earth's unique iron isotopic signature may have developed later in its history, possibly due to a collision with another planetary body or churning of the mantle. Researchers recreated high-pressure conditions using a diamond anvil cell and found contradictory results.
Astronomers have observed a striking spiral pattern in the gas surrounding LL Pegasi and its companion star, shedding light on the final act of a dying red giant star. The observations suggest that a highly elliptical orbit is responsible for the shape of the gaseous emissions.
Scientists confirm that silica can form complex self-assembling mineral structures in natural alkaline waters. These 'biomorphs' resemble living organisms and may hold clues to the origins of life on Earth.
Researchers found that inorganic chemicals can self-organize into complex structures resembling ancient fossils, raising questions about distinguishing life from non-life. This discovery challenges the identification of Earth's earliest microfossils and redefines the search for life on other planets.
A team in Italy has successfully installed a prototype for the Gyroscopes in General Relativity (GINGER) project, which aims to measure Earth's rotation rate vector with high precision. The device uses ring laser gyroscope technology and is housed deep underground to minimize external disturbances.
New research suggests that fast radio bursts might be evidence of advanced alien technology, powering interstellar probes in distant galaxies. A study found that a planet-sized transmitter could generate the needed energy to make such detection possible.
A recent NASA study using ARTEMIS observations reveals that most energy from magnetic reconnection is converted to heat in the nighttime magnetosphere, affecting exhaust flow stability. This finding provides crucial information about how magnetic reconnection can send particles towards Earth, initiating auroras and space weather.
Researchers refuted the theory that asteroids hit Earth every 26 million years, as previously suggested by US researchers. Instead, they found that impact craters formed over a wide range of ages and were not clustered in time.
Research by Matthew Huber at Purdue University suggests that the tropics warmed significantly during the Paleocene-Eocene Thermal Maximum, which would have made it difficult for some organisms to survive. The findings provide new insights into the Earth's climate history and challenge long-held assumptions about tropical temperatures.
Scientists at Tohoku University simulated the formation of super-deep diamonds using high-pressure and high-temperature experiments. The study suggests that these rare diamonds can form through the reaction of Mg-carbonate and silica minerals at extreme depths, offering new insights into Earth's interior conditions.
Researchers at Utah State University are part of a NASA project to develop technology for growing food and producing necessities on Mars. The team will focus on nitrogen fixation using bacteria and exploring the challenges of food production in a closed system.
The James Webb Space Telescope will analyze atmospheric components in TRAPPIST-1 exoplanets for potential biosignatures. Three promising planets, e, f and g, orbit within the habitable zone, with conditions suitable for supporting liquid water.
Researchers uncovered evidence of life at least 3,770 million years old from iron-rich deep-sea hydrothermal vents on Earth. The discovery provides direct proof of one of the oldest life forms on the planet.
Scientists found evidence of an ancient solid shell on Earth's surface using thermodynamic calculations and rock samples from Western Australia. The 'stagnant lid' model supports this theory, which contradicts the long-held assumption that plate tectonics began immediately after Earth formed.
Researchers found a 87 million-year-old signature of resonance transition between Mars and Earth in Colorado rocks, confirming the 'chaotic solar system' theory. This discovery provides a new understanding of the mechanics of the solar system and its impact on climate change over geologic time scales.
Astronomers have confirmed the existence of seven small planets orbiting TRAPPIST-1, with sizes similar to Earth and temperatures comparable to those of Venus, Earth, and Mars. The inner six planets are likely rocky in composition and potentially harbor liquid water.
Scientists studied iron isotope ratios to understand Earth's differentiation event and how it differed from other planets. Nickel played a key role in shaping the ratios, with different elements forming under various planetary formation conditions.
Scientists at Michigan State University are studying the atomic nucleus of exploding stars to gain insights into their evolution and the creation of elements in our universe. They have made breakthroughs in understanding the production of rare isotopes like aluminum-26, which could shed light on the amount of water on Earth.
The MMS spacecraft flies in a highly elliptical orbit around Earth, mapped in three dimensions using a tetrahedral formation. The mission uses GPS signals to calculate location and design maneuvers for precise control.
Researchers used time-reversed convection modeling to reconstruct ancient mantle structure, finding a second upwelling contributing to the Deccan Traps eruption. A currently active hotspot, Réunion, was also active 65 million years ago.
A new study highlights critical components missing from current climate models, including resource use, land-use change, and demographics. The authors argue that these omissions lead to unreliable predictions and costly consequences.
A recent study found that oxygen levels in the air began to rise around 2.4 billion years ago, coinciding with global glaciation and a single supercontinent called Kenorland. The research suggests that volcanic activity on this massive landmass may have contributed to the unstable climate leading to fluctuations in oxygen levels.
Researchers at Utah State University have found that helium can bond with sodium to form a stable compound under extreme conditions. The discovery, published in Nature Chemistry, reveals new insights into chemistry beyond Earth's surface.
Scientists are taking advantage of the rare opportunity to study the sun and Earth during the August 2017 total solar eclipse. The event will provide a chance to collect data only available during eclipses, including studying the corona and its effects on space weather.
Researchers studying NASA astronaut Scott Kelly's gut bacteria found changes associated with spaceflight that reversed upon return to Earth. The study, part of the 'twins' research, also discovered fluctuations in bacterial populations between identical twin brothers Scott and Mark Kelly.
A NASA scientist has initiated a study to determine whether severe solar storms can confuse animals' internal compasses, causing them to lose their way. The researcher hopes to find a statistical correlation between solar storms and cetacean mass strandings using massive data-mining efforts.
Researchers found that low atmospheric oxygen levels from the Middle Ages lasted for 2 billion years, hindering complex life forms' emergence. The Great Oxidation Event introduced modern oxygen levels, and land plants played a crucial role in this change.
NASA's Radiation Dosimetry Experiment reveals steady increase in cosmic radiation rate higher in the atmosphere, contrary to particle concentration. The findings will improve space weather models and develop real-time instruments for safe flight operations.
A new study by Brown University researchers shows that the 100,000-year orbital cycle and the 21,000-year precession cycle work together to drive the glacial cycle. The team found that sea ice in the Southern Hemisphere plays a crucial role in modulating the effects of precession on global temperature, leading to an expansion of sea ic...
Researchers studied asteroid Chelyabinsk to determine properties necessary for deflection missions. The study found that an asteroid's composition, internal structure, density, and physical properties are crucial in determining the success of a kinetic projectile launch.
An international team of researchers published seafloor maps revealing current activity at a plate boundary off Sicily and Calabria. The study provides new insights into the geological processes in the region, which has been hit by devastating earthquakes and tsunamis in the past.
A recent study by University of Montana researcher Ashley Ballantyne and former doctoral student William Smith found that land ecosystems take up less carbon during periods of rapid warming and more during periods of slower warming. This slowing-down is attributed to reduced plant respiration, not increased photosynthesis.
Researchers discovered most modern meteorites are rare, while many rare ones existed before a massive asteroid collision. Analyzing ancient micrometeorites and meteorites, the study found distinct differences in their composition.
The Wolf 1061 system is a promising target in the search for extraterrestrial life due to its proximity to Earth and the presence of a habitable zone. The team's findings suggest that one of the planets, Wolf 1061c, may have an atmosphere similar to Venus, which could lead to a runaway greenhouse effect.
The study provides new insights into the distinctive geometry of pulsars and their emission signatures. The researchers found that the orientation of pulsars' spin and magnetic axes significantly affects what emissions are seen on Earth.
The study reveals that sulfuric acid droplets formed after the asteroid impact caused long-lasting cooling, which likely contributed to the death of land-living dinosaurs. Marine ecosystems were also severely affected by the ocean circulation disturbances caused by surface cooling.
A UCLA-led research team has reported the moon's age to be at least 4.51 billion years old, with a range of 40 million to 140 million years older than previously believed. The findings were made using mineral analysis of zircons brought back by the Apollo 14 mission in 1971.
Astronomers have discovered three young star systems with doomed comets, suggesting a common mechanism for exocomet destruction. The study provides new insights into the past and present activity of comets in our solar system, potentially making life possible on terrestrial planets.
A team of researchers from York University, NASA, and Johns Hopkins University have identified icy features on Pluto, including penitentes, which are bowl-shaped depressions with spires around the edge. The study suggests that these features may exist on other planets where environmental conditions are similar.
Random temperature fluctuations in the mantle and on the surface could be the reason Earth is a habitable world, while other terrestrial planets are inhospitable. Additionally, commercial oyster farming can restore biodiversity by cleaning polluted waterways.
Researchers use neutron diffraction to study high-pressure and high-temperature phases of solid carbon dioxide, shedding light on the Earth's carbon cycle and potential for carbon substitution with silicon dioxide. The study provides new insights into the behavior of carbon dioxide under extreme conditions.
Researchers at Yale University developed a novel approach to detect exoplanets by analyzing signal fluctuations in star spectral intensity. By studying all signal information together, they can refine the search for Earth-like planets and improve traditional methods.
Researchers have discovered a star that ingested some of its planets, revealing a violent history for the planetary system. The star's composition suggests it devoured four planets, preserving lithium and other elements in its atmosphere.
The MyShake app has recorded nearly 400 earthquakes globally since its launch in February, providing valuable data on seismic activity. The app's performance shows it can complement traditional seismic networks and serve as a stand-alone system in areas with few stations, helping reduce earthquake-related injuries and damage.
Researchers studied olivine, a key mineral in Earth's mantle, to understand plate tectonics and measure the Earth's surface thickness. They found that tectonic plates are approximately 100 kilometers thick, contradicting previous theories.