A new model suggests that the transition from a hydrogen-rich atmosphere to an oxygen-rich one occurred approximately 2.4 billion years ago, driven by the escape of hydrogen atoms into space. This allowed free oxygen to oxidize the crust and eventually dominate the atmosphere.
Researchers at Purdue University have confirmed findings by Rusi Taleyarkhan, using a tabletop device to produce nuclear fusion reactions through the use of ultrasound. The experiment produced neutrons in the range of 2.5 MeV and tritium, providing evidence for thermonuclear fusion.
A recent study confirms that the Earth's energy is out of balance, with an imbalance of 0.85 watts per meter squared causing a significant impact on global temperatures. The study also reveals that warmer waters will lead to accelerated ice sheet disintegration and sea level rise.
A University of Chicago instrument has discovered dust particles around Saturn's moon Enceladus, sparking interest in a possible dust cloud or connection to the E-ring. The findings could help scientists better understand Enceladus' role as a source of water ice particles in the E-ring.
A novel self-replicating microorganism, nanobacteria, has been linked to kidney stone formation in astronauts and may pose an infectious risk. The discovery provides additional clues to understanding the link between nanobacteria and pathologic calcification-related diseases.
Elizabeth Kessler's research examines how aesthetics influences the presentation of Hubble Space Telescope images, balancing art and science to evoke awe and wonder. Her study reveals how subjective choices in image processing create complex representations of the cosmos that fit within a Romantic landscape tradition.
Researchers have developed a new method to estimate global ocean productivity by analyzing the amount of carbon in phytoplankton, using satellite data and ocean color. This approach may lead to significant revisions in estimates of ocean carbon absorption and new understanding of marine ecosystems.
The MIT guidance system allows pilots to issue high-level commands, such as 'fly to Task Area B', to a UAV, which executes them while avoiding threats. The system uses a natural-language interface and task scheduler to improve safety and efficiency.
The Florida Institute of Technology has launched a hydrogen fuel cell research center with a focus on developing new mainstream energy sources. The center, which brings together faculty from various colleges, aims to pool expertise and solve complex problems in the field.
Dr. John Deaton, a renowned human factors specialist, has developedVECTOR, an interactive video game to teach cultural skills for U.S. peacekeepers. The game simulates real-life scenarios, enabling trainees to learn appropriate behavior in diverse situations.
Researchers at the University of Washington are developing a new propulsion concept that could dramatically cut the time needed for astronauts to travel to and from Mars. The mag-beam concept uses a space-based station to generate a stream of magnetized ions that propel a spacecraft through the solar system, potentially reducing round ...
Researchers uncover a new Martian meteorite, MIL 03346, found in Antarctica's Miller Range Icefield, bearing witness to significant segments of Mars' volcanic and environmental history. The specimen is the seventh recognized member of the nakhlites group, offering a critical 'reality check' for interpreting Mars data.
Researchers from the University of Houston are working on a plasma propulsion system called VASIMR, which aims to improve electric propulsion systems for deep space missions. The team has been studying the physics and engineering behind VASIMR since 1980 and recently received an award for their technical and scientific excellence.
The NorthEast Aerosol eXperiment (NEAX) aims to evaluate the effects of aerosol pollutants on Earth's radiation balance and climate forcing. The researchers will conduct regional air-sampling flights from Latrobe Airport to study aerosol formation, growth, and distribution.
A recent study published in the Journal of Air Transport Management found that domestic airline ticket taxes add approximately 15% to average fares, contradicting airline executives' claims. The research analyzed millions of tickets and provides a definitive answer to questions about ticket tax burdens on air travel costs.
The Community Climate System Model version 3 (CCSM3) predicts higher global temperatures if societies continue to emit large quantities of carbon dioxide. With improved accuracy, CCSM3 will be used to study climate patterns and chemical processes, shedding light on the impacts of climate change.
Scientists discover a comet with broad mesas, craters, pinnacles, and canyons on its surface, contrary to expectations of a dark dust-covered comet. The surface's unique features suggest that most impacts were absorbed or vented into space, making it possible to clearly see the crater formations.
The study reveals changes in Earth's reflectance over the past two decades, with a sharp decline in albedo from 1995-2001 and subsequent brightening. These variations are comparable to those in infrared radiation observed in the tropics, influencing the Earth's radiation budget.
Researchers use a NASA WB-57 research jet to examine icy cirrus clouds, aiming to understand their warming and cooling effects on Earth's climate. The Middle Latitude Cirrus Experiment gathers detailed information to improve computer simulations of future climate change.
The US President's FY 2005 budget proposes significant cuts to non-defense Research and Development (R&D) programs, with some agencies facing declines of up to 28%. The largest decreases will occur in the Department of Agriculture, Department of Commerce, and National Institutes of Health.
The Kavli Institute will bring together world-renowned thinkers in nanoscale science to address major challenges and opportunities. The institute aims to define a path for progress in creating significant new science by sponsoring seminars and symposia on emerging themes in nanotechnology.
The journal celebrates the Wright brothers' achievement with a special issue focusing on the application of operations research in aviation. The studies explore various aspects, including aircraft scheduling, air transport networks, and airspace planning.
Materials scientist George Harman suggests using corrosion-resistant metals like gold and newer polymers to create microelectronic interconnections that can withstand extreme temperatures. He also proposes the use of flip chips with gold contacts to produce heat-resistant spacecraft electronics.
V. Zakharov received the 2003 Dirac Medal of the ICTP for his groundbreaking work on mathematical physics of nonlinear phenomena, particularly in the field of weak wave turbulence. His research has significantly contributed to our understanding of plasma physics, hydrodynamics, magnetism, and optics.
A new study by Duke University researchers suggests that deforestation in the Amazon can lead to a significant reduction of rainfall in the Midwest and Dakotas during summer months. The simulation used mathematical equations to model climate behavior, finding a 10-15% decrease in precipitation in these regions.
The new software tool analyzes engine models and extracts information on mechanically sound designs, enabling faster prediction of jet engine performance. By using an optimization algorithm, the tool calculates worst-case vibration levels, allowing engineers to determine the reliability of their designs quickly.
NASA awards consortium of research institutions $30 million to create self-healing materials inspired by nature. The Institute for Biologically Inspired Materials will investigate repair mechanisms used by plants, animals and other organisms.
The NASA consortium aims to create self-repairing materials that mimic the properties of biological substances like bone and sea shells. Researchers will focus on creating innovative composites of organic and inorganic compounds to make airplanes and spacecraft lighter, stronger, and more reliable.
Researchers will use tiny devices called nanosensors that can detect early signs of radiation-induced cell damage. The sensors, which pass easily through blood membranes, aim to avoid problems with current implantable sensors and eliminate blood sampling.
The discovery of a Jupiter-like planet and the smallest known planet outside the solar system offers hope for finding life beyond Earth. The newly found planet orbits 55 Cancri at nearly the same distance as Jupiter orbits our sun, making it a near analog to our own solar system.
A massive weather study is underway in Kansas, Oklahoma, and Texas, using six aircraft and 30 ground sensors to track water vapor and predict heavy rain. The IHOP2002 project aims to improve forecasts from 1 to 12 hours ahead of heavy rain, which could help in flash-flood safety and other applications.
University of Washington cosmologist Craig Hogan believes new experiments could shed light on subatomic particles called gravitons, potentially uniting quantum mechanics and relativity. These advancements might also provide clues to the holographic principle, which suggests everything in 3D can be specified by information in 2D.
Researchers at Northwestern University have created a novel device that detects ultraviolet light 10 times more efficiently than the Hubble Space Telescope. The innovative detector uses gallium nitride material to block visible and infrared light, allowing astronomers to study important objects in the universe for the first time.
Researchers found that tropical biomass burning is causing increased humidity in the stratosphere, contributing to milder winters in North America and Europe. The study suggests that higher humidity helps catalyze the destruction of the ozone layer.
The MIT team's X-Cell 60 model rotorcraft performed a 360-degree aileron roll autonomously, marking the first-ever achievement in its kind. The helicopter's small size and low cost make it an attractive option for military reconnaissance or aerial filming.
Researchers at Lawrence Livermore National Laboratory presented preliminary findings associating unique gas flows with rapidly rotating black holes. The study aims to explain unusual periodic timing properties in X-rays emitted near suspected black holes.
Scientists took detailed measurements of a pollution plume containing Gobi desert dust and hydrocarbons on both sides of the Pacific, revealing elevated levels of pollutants. The study shows that Asian air pollution can affect air quality in North America, with significant implications for climate change.
Rutgers University has received significant funding from the National Science Foundation (NSF) for its information technology research projects. The university's computer science and engineering departments are among the recipients, with projects focused on pervasive computing, smart messages, and data analysis.
Purdue University engineers used genetic algorithms to design innovative constellations of satellites orbiting the Earth, reducing blackout times by 90 minutes. The algorithm discovered unconventional designs with non-equal spaced satellites, offering better performance and surprising aerospace experts.
The American Chemical Society has awarded U.S. Sen. Jeff Bingaman for his dedication to advancing science, particularly in the areas of energy and education. He has championed double-digit funding increases for key scientific agencies, ensuring a reliable and environmentally responsible energy supply.
Pat Roberts recognized for strengthening K-12 science education, promoting increased civilian and defense research funding. He established advisory committees and introduced bills improving math and science teaching quality.
Researchers from Mayo Clinic and University of Minnesota found that tobacco industry sponsored research misled the public about the health risks of secondhand smoke. The study analyzed over 1.5 million pages of internal documents, revealing a campaign by the industry to deny health risks and preserve profits.
A new technique uses GPS signals to collect environmental data, reducing the size and cost of instrumentation. The system is promising for studying ocean-related conditions and global climate change, with potential applications in satellite systems and unmanned aerial vehicles.
Dana Longcope, a Montana State University physicist, has received the Presidential Early Career Award for Scientists and Engineers. He was recognized for his work on modeling the sun's magnetic fields, which helps explain solar flares and coronal mass ejections that affect Earth's technology.
Researchers aim to unlock cellular communication secrets using air traffic control principles and develop new instrumentation for analyzing complex biological systems. The goal is to understand how genes function and design intricate electronic circuits, applying insights from computation and engineering.
The MACE-II experiment, launched on September 8 aboard the space shuttle Atlantis, will test techniques for predicting motion and controlling vibrations in zero gravity. With multiple months of testing, researchers will interact with the experiment remotely to refine its performance.
Marcia Guyse, a Decatur, Ala., mom, uses NASA's Educator Resource Center to plan innovative science and math activities for her home-schooled children. The center offers free workshops, materials, and online resources that align with national standards, enhancing her teaching approach.
Researchers found that a specific orbital alignment in 2014 provides an ideal escape route back to Earth in case of an emergency on the way to Mars. This trajectory is only possible within a few days of January 14, 2014, making it a critical launch window for future human missions.
Lawanna Harris, a NASA engineering technician, is working on a rocket-based combined cycle engine to make space travel more affordable. Her research goal is to reduce the cost of payload from $10,000 to hundreds of dollars per pound within 25 years.
A new mathematical technique developed by Purdue University engineer James Longuski has significantly reduced the time required to plan space missions. By using a graphical representation of possible paths and automating calculations with software program STOUR, engineers can quickly identify optimal routes for spacecraft travel.
The SPHERES project aims to test formation flying technologies and measure key parameters in microgravity. The mini satellites, the size of volleyballs, are being tested aboard NASA's KC-135 airplane, allowing researchers to validate control algorithms, metrology, and autonomy.
The XMM-Newton satellite is now operational, sending home images of celestial objects and observing bright binary stars, pulsars, and cataclysmic variables. It will study massive black holes and exotic stars, mapping the cosmos to greater distances.
Researchers at Purdue University are developing a new type of environmentally friendly fuel cell that generates about 20 times more electricity per pound than car batteries. The cell produces electricity through chemical reactions between hydrogen peroxide and aluminum.
Professor Helen Muir has received the Whittle Safety Award for her pioneering work on passenger behaviour in emergencies, significantly improving air travel safety. Her research and contributions have been widely recognized globally, with Vice-Chancellor Prof. Frank Hartley praising her achievements.
Researchers have developed seven nonlinear control laws for multi-axis control of high-performance aircraft, which could potentially save battle-damaged planes from combat. These approaches have shown spectacular results on simplified models but display pathological responses on higher fidelity simulation models.
Researchers at the University of Washington have developed a new propulsion system called M2P2 that could potentially increase spacecraft speeds by up to 10 times, surpassing Voyager I's distance from Earth. The system uses a plasma chamber and electromagnetic field to harness the solar wind for propulsion.
NASA has selected 23 organizations to develop revolutionary space-based power generating systems that harness the Sun's energy for Earth and space. The selected teams will receive $6.4 million in funding to create commercially viable space solar power technologies.
The Far Ultraviolet Spectroscopic Explorer (FUSE) will test the Big Bang theory and collect comprehensive observations of the Milky Way's star-forming regions. Launched on June 23 from Cape Canaveral Air Station, the three-year mission marks a first for an academic department in managing a satellite.
The Inner Space/Outer Space II Symposium will explore questions of the hour in particle astrophysics, including the origins of the universe and dark matter. The four-day agenda includes presentations on Extra Dimensions, the Accelerating Universe, and Beyond the Standard Models.
Scientists have discovered magnetic stripes on Mars, similar to those found on Earth, suggesting the planet was once magnetized and had a global magnetic field. These findings provide insights into Mars' formation and evolution, shedding light on its potential for hosting liquid water.