Researchers have directly imaged a faint brown dwarf companion to the star HD 3651, which hosts a planet. The discovery provides valuable information on planetary formation and offers a unique insight into the co-formation of planets and brown dwarfs around the same star.
A recent study found that most adult beachgoers accurately reported their sun habits, with moderate to substantial agreement between self-report measures and objective procedures. The study used a novel sunscreen-swabbing procedure in real-world conditions, providing valuable insights into the validity of self-report sun habits.
Astronomers discover sun was born in a massive star cluster, challenging current theories on planetary formation. The researchers used radioactive isotopes from meteorites to calculate the distance and time of a nearby supernova, suggesting that hundreds or thousands of solar siblings may exist.
Researchers at Clemson University have created a nanotechnology-based countermeasure to render anthrax spores harmless. The method uses sugar-coated carbon nanotubes to bind with the spores, preventing their inhalation and destruction.
Astronomers used VISIR instrument to map infrared disc around young, massive star HD 97048, finding it at least 12 times larger than Neptune's orbit. The disc is flared and contains a large amount of gas, potentially hosting planetary embryos.
Scientists at the University of Kentucky are testing a lotion that stimulates melanin production, reducing UV damage and increasing skin protection. The treatment has promising results, offering an alternative to traditional sunless tanning products and tanning beds.
A review of existing results and new calculations by US, Swiss, and German researchers suggest that solar brightness has a negligible effect on Earth's climate. The study implies that human influences must outweigh the effects of solar changes in causing global warming over the past century.
A parent-based intervention program encourages sun-safe behaviors and discourages tanning among children with high-quality relationships between parents and children. Family variables such as compliance and monitoring levels also impact the effectiveness of the program.
A parent-based intervention program promotes sun-safe behaviors in children, especially when parents and children have a high-quality relationship. The program is most effective in families with a high-quality parent-child relationship, high level of compliance, and low negative communication.
The Johns Hopkins University Applied Physics Laboratory-built STEREO spacecraft will explore coronal mass ejections and their impact on Earth. The twin observatories will capture 3D images and particle measurements of the sun by flying as mirror images of each other.
Researchers have solved a 30-year puzzle on how migratory birds integrate multiple directional cues. They found that polarized light patterns play a key role in calibrating the birds' magnetic compass, providing an independent reference system. This discovery sheds light on the complex navigation systems used by migratory birds.
Astronomers have observed a massive nuclear explosion on the surface of a white dwarf star, sending gas into space and creating a blast wave that accelerates electrons to nearly the speed of light. The European VLBI Network tracked the outburst using telescopes around the world, revealing a cigar-like shape in the blast wave.
Researchers have defined normal melanocyte numbers in sun-exposed skin, distinguishing sun damage from early melanoma. This finding allows for less tissue removal and trauma to the skin.
Astronomers have found four stable groups of asteroids around the Sun: Kuiper Belt, Jupiter Trojans, main asteroid belt, and now Neptune Trojans. The new discoveries suggest a large population of high-inclination Neptune Trojans, which may have formed after giant planets settled into their orbits.
Researchers have discovered six 'planemos,' planetary mass objects with masses similar to extra-solar planets, surrounded by dusty discs that may evolve into miniature planetary systems. These findings suggest similar infancies for our Sun and smaller objects, blurring the definition of a planet.
A recent study found that blocking ghrelin may improve insulin sensitivity and glucose control in mice, potentially providing a new approach for treating type 2 diabetes. However, the study also raised concerns about potential long-term risks of increasing ATP production by pancreatic cells.
A recent study published in Dermatologic Surgery reveals a significant link between summer sun exposure and the development of melanoma. Sun protective measures such as sunscreen and clothing are necessary to prevent skin cancer, despite controversy surrounding current guidelines.
Scientists used RNA interference to block a mineralocorticoid receptor, which signals the body to absorb sodium and water into the bloodstream. The treatment kept blood pressure from worsening but did not eliminate it, and significantly reduced kidney damage in rats.
A team of scientists and students captured data during a rare three-minute solar eclipse to study why the Sun's corona is millions of degrees hotter than its surface. The expedition used new electronic cameras and specialized filters to record images of the corona.
Scientists will study the direction and velocity of flows in the corona, a phenomenon visible only during total eclipses. The event also marks NASA's annual Sun-Earth Day program, highlighting the interactions between the sun and our planet.
A study found an association between HPV antibodies and squamous cell carcinoma risk, with patients diagnosed with squamous cell carcinoma more frequently testing positive for beta type HPVs. Lifestyle habits, such as sun exposure and smoking, were not significantly linked to skin cancer development.
Researchers at Stanford University have developed a new technique that allows anyone with a computer to download images of the entire solar surface. This technology enables the early detection of solar storms on the far side of the sun, which can be detected days or weeks in advance and affect Earth's orbiting satellites, telecommunica...
Researchers predict Cycle 24 sunspots will span 2.5% of Sun's surface, peaking in 2012, with improved forecasting tool helioseismology used to analyze recent solar cycles and forecast future activity.
The NCAR team predicts that Cycle 24 will produce larger-than-usual sunspots, affecting satellite orbits and power systems. Scientists developed a model tracking subsurface movements of sunspot remnants for more than 98% accurate forecasts.
Researchers at Boston University found that X-ray bursts from the Sun cause dramatic alterations to Mars' ionosphere, as detected by NASA's MGS spacecraft. The team used measurements on Earth to confirm the findings and gain a better understanding of the phenomenon.
Counseling pediatricians on skin cancer prevention is crucial, as childhood sun exposure increases the risk of melanoma. UV light from natural sunlight and artificial sources like tanning beds also pose risks.
Scientists confirm that dark matter dominates the total mass of our home galaxy, the Milky Way, through the Radial Velocity Experiment (RAVE) survey. The team aims to measure the speed, temperature, surface gravity and composition of up to a million stars passing near the sun.
Researchers discovered young super nebulae around giant star clusters, containing up to a million young stars, and emitting radiant power billions of times that of the sun. The discovery raises questions about why Milky Way no longer forms similar clusters after 10 billion years.
Two nearly identical spacecraft, STEREO (Solar TErrestrial RElations Observatory), were shipped to NASA Goddard Space Flight Center for pre-launch tests. The twin observatories will explore coronal mass ejections and their impact on space weather, obtaining unique 3-D images of the sun.
Stevens Institute of Technology has received a $60,000 grant from SUN Microsystems to establish the SUN Laboratory for Advanced Networked Systems (SUNLANS). The lab will focus on increasing high-end Grid system utilization in research and education.
Researchers observed the impact of a copper projectile on Comet Tempel 1, finding it released approximately 4,500 tonnes of water vapor. The comet's surface was composed of icy grains that sublimed in sunlight, producing a bright tail. These findings suggest comets are more like 'icy dust balls' than previously thought 'dirty snowballs'.
Vitamin D and calcium deficiencies may increase the risk of periodontitis due to inflammation and bone loss. Research suggests that obtaining adequate vitamin D through sunshine or fortified foods is crucial to prevent this.
The Northeast Sun Grant Institute at Cornell is a regional hub for researching plant biomass in energy and chemical production. The institute aims to develop sustainable industries and communities by producing bio-economy goods such as biopower, biofuels, and bioproducts.
A randomized controlled trial found that high-protection sunscreen did not influence the duration of sunbathing. In fact, the study discovered that people tend to self-regulate their sun protection with sunscreens by adapting the amount of sunscreen used based on its SPF level.
Study finds that repetitive tanning behavior may be linked to a kind of addiction, similar to alcoholism or drug dependency. Researchers identified UVL tanning dependence in 53% of beachgoers, suggesting why educational interventions have been unsuccessful.
A recent study highlights the dangers of Solar Proton Events (SPEs) and Coronal Mass Ejections (CMEs) on a manned Mars mission. The researcher recommends improving space weather monitoring and developing lightweight mechanisms to detect dangerous space weather, as well as creating more robust models for propagation over larger distances.
A recent study by NASA's Chandra X-ray Observatory suggests that the sun contains nearly three times more neon than previously believed. This discovery has solved a critical problem with understanding how the sun works. The increased amount of neon plays a crucial role in energy flow from nuclear reactions to space.
A team of NASA scientists, led by Dr. Michael King, traveled through Kenya, Tanzania, Uganda, and Eritrea to find locations for AERONET sunphotometers. They identified several ideal sites in East Africa to study aerosols and their effects on climate change.
Researchers found men with high sun exposure had half the risk of prostate cancer compared to those with low sun exposure. Men with certain gene variants showed a 65% reduced risk, suggesting sunlight helps reduce prostate cancer risk through vitamin D production.
Scientists confirm Voyager 1's crossing of the termination shock at 94 AU, marking a significant milestone on its journey to interstellar space. The spacecraft is expected to reach the heliopause in another 10 years or so, providing valuable insights into the solar system and beyond.
Patients with a personal or family history of melanoma exhibit similar sunbathing patterns and protective measures to low-risk populations, highlighting the need for improved education and awareness campaigns.
A new study reveals that Coronal Mass Ejections (CMEs) can originate from tiny magnetic regions on the Sun, challenging current theories. The research used data from NASA/ESA's SOHO spacecraft and found that these mini-CMEs were energetic enough to reach Earth, causing aurora and disrupting satellite communications.
A significant gap exists in understanding Earth's energy balance, crucial for accurately determining climate change. Scientists call for improved research observations and models to describe the overall energy balance of Earth's system.
A Danish study found that sunburns occur most frequently among adolescents and young adults, who also exhibit the most risk-taking behavior when outdoors. Women tend to experience more sunburns due to longer exposure times during peak sun hours.
Scientists found that auroral ovals in the northern and southern hemispheres do not form mirror images, contrary to previous thought. The study suggests that the tilt of the Earth's magnetic field towards the Sun and conditions in the solar wind play a crucial role in shaping the auroras.
A simple intervention using UV filter photos increased sun protection during incidental exposure, with 37% of participants reporting sunless tanner use. The study also found that the intervention led to more friends and family being informed about UV damage and sun protection.
Astronomers using the European Space Agency's XMM-Newton telescope discovered that Jupiter's x-ray glow is due to x-rays from the Sun being reflected back off the planet's atmosphere. The discovery synchronises Jupiter's day-to-day disk x-rays with the Sun's emissions, providing new insights into solar activity.
A team of scientists found that solar storms and Arctic winds led to a 60% ozone reduction in the upper stratosphere in 2004. The study used data from seven satellites to conclude that energetic particles from the sun triggered chemical reactions, leading to increased nitrogen oxide levels.
A large-scale study found that frequent exposure to ultraviolet rays from the sun, lamps, and solariums reduces the risk of developing non-Hodgkin's lymphoma by 30-40%. Researchers analyzed responses from over 6,000 patients and healthy individuals in Sweden and Denmark.
Research findings indicate that increased sun exposure is associated with improved melanoma survival, while decreased UV radiation exposure may lower non-Hodgkin lymphoma risk. These studies provide new evidence for the potential beneficial effects of sunlight on cancer incidence and outcome.
Dr. McDonald and his team solved the missing solar neutrinos puzzle, confirming that neutrinos change type on their journey to Earth from the sun. This discovery validates theories of energy generation in the sun and transforms our understanding of elementary particle physics.
Astronomers have detected Regulus' rotationally induced distortions using the CHARA array, revealing its temperature difference between polar and equatorial regions. The star's centrifugal force causes it to expand, resulting in gravity darkening, where it becomes brighter at its poles than at its equator.
Researchers at University of Toronto developed a sprayable infrared detector that can harness the sun's invisible rays. The discovery may improve renewable energy sources by increasing efficiency and flexibility in solar cells.
A new NASA book, 'Touch the Sun,' allows visually impaired students to explore solar science through embossed color pictures, Braille, and large-print descriptions. The book features 16 photographs of the sun and space weather, selected by Dr. Joseph Gurman and Steele Hill.
Astronomers used computer simulations to predict that a close encounter between our Sun and another star in the Milky Way galaxy could have given us our solar system's edge and put small, alien worlds into distant orbits. The study found potential locations where captured objects from other solar systems might be found.
A systematic review by the Task Force on Community Preventive Services found that teaching children how to protect themselves from the sun can reduce risk of skin cancers. Younger children are more receptive to self-protective behaviors and benefit from sun-protection programs integrated into existing learning situations.
Researchers have reconstructed sunspot activity over the last 11,400 years and found that the current level of high solar activity is unique within the past 8,000 years. This study suggests that the Sun's magnetic field is the origin and energy source of these phenomena.
Scientists found that removing long-term solar cycles from global climate models takes away about a tenth of a degree Celsius of early 20th century warming, suggesting other influences may play a greater role than the Sun's. The study adds to the puzzle of understanding complex relationships between the Sun and climate.
Researchers use meteorite composition to test theories on solar system formation, shedding light on the sun's oxygen makeup. The Genesis spacecraft collected particles blown out from the sun, providing new insights into local variations in oxygen isotopes.
Researchers use joint ESA/NASA satellite data to form two rival theories on 'coronal heating'. The strong magnetic field is believed to be the culprit behind this phenomenon. Sophisticated computer simulations and observations from SOHO provide crucial evidence for these explanations.