New study finds a cyclical pattern between impact craters and extinction events every 26 million years, suggesting a cause-and-effect relationship. This cosmic cycle is linked to periodic motion of the sun and planets, affecting life on Earth over the past 260 million years.
The Lucy mission aims to survey the diversity of Trojan asteroids, which are believed to be remnants from the formation of the outer gas giants. The spacecraft will use remote-sensing instruments to study geologic and physical properties of the asteroid targets.
New evidence shows that asteroid impact on Earth 66 million years ago accelerated volcanic eruptions in India for hundreds of thousands of years. The eruptions, known as the Deccan Traps, likely suppressed recovery of life for 500,000 years after the KT boundary.
New evidence suggests that a massive asteroid collision with Earth triggered increased volcanic activity in the Deccan region of India. High-resolution argon dating revealed a dramatic increase in eruption rate within 50,000 years of the impact.
Scientists used computer simulation to discover that asteroids can deliver more water to the lunar surface than the cumulative fall of comets over a billion year period. The study found that asteroids contain a significant proportion of water, effectively protected in their crystal lattice of minerals, and can release it when heated.
A novel radiopharmaceutical probe has been developed to detect blood clots anywhere in the body using whole-body PET scans. The probe can distinguish recently formed clots from older ones and reveal clot composition, which can determine treatment response.
The OSIRIS-REx camera suite, consisting of PolyCam, MapCam, and SamCam, will enable the spacecraft to image and map Bennu, select a safe sampling site, and collect a sample. The mission is scheduled to launch in September 2016 and will return the largest sample from space since the Apollo lunar missions.
The team used the Campanile probe to spectroscopically map nanoscale excited-state/relaxation processes in monolayer crystals of molybdenum disulfide, revealing significant optoelectronic heterogeneity. The discovery of an unexpected edge region with sulfur deficiency holds implications for future optoelectronic applications.
The OSIRIS-REx Visible and Infrared Spectrometer (OVIRS) instrument will help the team select a suitable sampling site on asteroid Bennu by measuring visible and near infrared light. The mission aims to investigate the composition of the early solar system, organic materials, and water.
The OSIRIS-REx team is preparing to ship its instruments to the spacecraft's assembly facility, with a launch date of September 2016. The mission aims to bring back a small sample from asteroid Bennu for study, providing insights into the asteroid's composition and properties.
The OSIRIS-REx team is preparing to deliver crucial instruments for the NASA mission to collect a sample from near-Earth asteroid Bennu. The spacecraft will map and analyze the asteroid's surface using five key instruments, including cameras, altimeters, thermometers, spectrometers, and an imaging spectrometer.
A CU-Boulder instrument, SUDA, has been selected for a NASA mission to Jupiter's icy moon Europa to measure surface particles and study the moon's hidden ocean. The mission aims to understand the prerequisites of life in the solar system.
A new study led by University of Southampton researchers suggests that ocean acidification may not have caused the mass extinction of ammonites and other planktonic calcifiers. The research found that the asteroid impact was the primary cause of the extinctions, but not due to ocean acidification levels being too weak.
New research published by the University of Warwick finds evidence that water-rich asteroids or comets are common around other stars than the Sun. The study suggests that water can be delivered to planets like Earth via these bodies, potentially creating a suitable environment for life to form.
The Magnetospheric Multiscale (MMS) mission successfully launched a unique formation of four identical spacecraft to study magnetic reconnection, driving space weather events that disrupt Earth's orbit. The Goddard-developed Navigator GPS receiver enabled precise navigation and tracking in weak signal areas.
The Tropical Rainfall Measuring Mission (TRMM) has ended its 17-year mission, providing critical rainfall data for tropical cyclone monitoring, flood detection, drought monitoring, and disease monitoring. TRMM's legacy lives on through the Global Precipitation Measurement (GPM) mission, which succeeds and improves upon the TRMM project.
Researchers from CSIC have determined the orbit of Annama, a new characterized meteorite, and found similarities with a potentially dangerous asteroid. The study suggests that Annama may be linked to an asteroid of about 400 meters in diameter, posing a potential threat to Earth.
A team of scientists plans to take core samples from the Chicxulub impact crater, 65.5 million years old and associated with the mass extinction event that wiped out dinosaurs. The expedition will aim to uncover details about the impact and shed light on the mechanisms of large impacts on Earth and other rocky planets.
Researchers at McGill University developed a powerful new intraoperative probe for detecting cancer cells in real time during surgery. The Raman spectroscopy probe has a greater than 92% accuracy in identifying invasive brain cancers, and its use may improve patient outcomes by reducing cancer recurrence and extending survival times.
A new study uses a fluorescent probe to track osteoarthritis development in male mice, providing insights into early detection and monitoring of the disease. The findings show that the probe emits a brighter signal in injured knees as the disease progresses.
Researchers from University of Exeter, Edinburgh and Imperial College London recreated asteroid impact to debunk theory it caused massive global firestorms. The intense heat near the impact site was too short to ignite live plants, but affected areas far from the site were heated for longer periods.
Researchers capture asteroid magnetic field moments, revealing extended lifetimes and creating mechanisms similar to the Earth's own magnetic field. Ancient meteorites provide a cosmic archaeological mission, shedding light on the magnetic history of asteroids and their impact on the Earth's core future.
A new study reveals that dinosaurs remained diverse in European ecosystems until the end of the Cretaceous period. Fossils from Spain, France, and other countries show that meat-eating and plant-eating species were present and thriving during the final few hundred thousand years before the asteroid impact.
Researchers propose using photonic booms to map asteroid surfaces and study celestial objects, offering new insights into the universe. High-speed cameras could capture these flashes, revealing previously unknown information about asteroids and other cosmic bodies.
The HS3 mission investigated the processes underlying hurricane formation and intensity change in the Atlantic Ocean basin. The study focused on four tropical cyclones: Cristobal, Dolly, Edouard, and Gonzalo. Data collected by NASA's Global Hawk aircraft revealed strong winds and dry air shifts near Hurricane Cristobal's center.
Scientists created a global geologic and tectonic map of asteroid Vesta, revealing a history of large impacts from massive meteorites. The oldest surviving crust predates the largest impact event, the Veneneia impact, which occurred around 2.1 billion years ago.
Researchers have discovered an unexpected tail on asteroid 62412, which was previously known as a typical asteroid. The discovery reveals that there may be up to 100 active asteroids in the main asteroid belt, shedding light on the processes that cause some asteroids to become active.
Asteroid Patroclus-Menoetius has been found to have a non-spherical shape, with axial ratios indicating a mostly oblate shape. The team's analysis also revealed the asteroid pair's spins were faster when they formed, currently in a doubly synchronous state.
Researchers used super high-speed cannon to simulate collisions on celestial bodies. They found that damage from the impact starts where one would expect, but fails in opposite direction and propagates outward like a blooming flower. The study suggests Vesta's 'belt' formed by an oblique impact.
The Tropical Rainfall Measuring Mission (TRMM) will cease science operations in April 2015, ending 17 years of rainfall and storm monitoring. The satellite's instruments, including the Precipitation Radar, have provided critical insights into precipitation patterns and their impact on climate, weather, and natural disasters.
Scientists gathered crucial information on upper-level wind shear affecting Hurricane Edouard using NASA's HS3 mission Global Hawk. The hurricane strengthened during the sixth flight, with data showing a sea-level pressure of 969-970 millibars near the eye/eyewall border.
Researchers have developed a novel probe that reports on the electrical activity of cells using tarantula toxin, allowing for the observation of voltage-activated ion channels in live cells. This breakthrough has the potential to help scientists understand the function of specific ion channels and identify drug targets for neurological...
The mission has provided unprecedented ultraviolet images of the tenuous oxygen, hydrogen, and carbon coronas surrounding Mars. Scientists also made a comprehensive map of highly variable ozone in the Martian atmosphere underlying the coronas.
Researchers from MIT and other institutions found the Procellarum region on the moon's near side was formed by a large plume of magma deep within the moon's interior. The angular outline of the basin could not have been created by an asteroid impact, according to the team.
NASA's Asteroid Initiative aims to protect Earth from potentially hazardous impacts. Citizens participate in forums to discuss detection strategies, planetary defense, and asteroid exploration. The initiative seeks to balance costs, risks, and benefits of human exploration in space.
NASA's HS3 mission investigates hurricane formation and intensity change using two unmanned Global Hawks, analyzing data on winds, temperature, pressure, and humidity. The mission aims to examine conditions that favor rapid intensification of tropical cyclones.
Researchers at Australian National University developed a technique to cool nanowire probes with lasers, increasing their sensitivity 20 times and enabling detection of tiny forces. This could improve the resolution of atomic force microscopes, measuring nanoscopic structures and molecular interactions.
Researchers at the University of Tennessee discovered that near-Earth asteroid 1950 DA is held together by van der Waals forces, which defy traditional assumptions about asteroid composition. This finding has implications for defending against massive asteroid impacts and may inform strategies for space exploration.
A Curtin University study of a WA meteorite has shed light on the solar system's bombardment history, revealing that asteroid collisions ceased after 3.4 billion years ago due to asteroids being too small or protected by regolith. The research suggests that impacts stopped occurring after this period and remain unchanged until now.
Researchers have developed a 3-in-1 optical probe that combines spectroscopic techniques to detect cancerous skin lesions. The device may reduce unnecessary biopsies by providing a clear picture of which skin lesions are most likely cancerous, potentially saving lives.
Research suggests that giant asteroid impacts significantly altered the early Earth, mixing and melting its surface. The findings provide new insights into the role of asteroid bombardments in shaping the Hadean Earth's surface.
Asteroid impacts were a key factor in shaping early Earth's surface, with large collisions melting and burying the crust. The Hadean eon's geography was heavily reprocessed, with impact-generated melt contributing to the formation of the Moon.
A new study suggests that dinosaurs' demise was partly due to the perfect storm of environmental upheaval, including volcanic activity, changing sea levels, and varying temperatures. This weakened their food chain, making them vulnerable to extinction.
The Advanced Technology Large-Aperture Space Telescope (ATLAST) mission aims to study dark energy, the mysterious form of energy that accelerates the universe's expansion. ATLAST would also detect signatures of life in the atmospheres of Earth-like planets and resolve stars in distant galaxies.
Researchers have redefined the asteroid Vesta's internal structure based on Dawn data and simulations, questioning previous models of rocky planet formation. The study found that Vesta's crust is 3 times thicker than expected and lacks olivine, a mineral common in planetary mantles.
Researchers David Trilling and Michael Mommert found asteroid 2011 MD to be 65% empty, consisting of a cloud of rocks or dust with a solid rock at its nucleus. This challenges long-held assumptions about the nature of small asteroids.
SwRI-led CuSPP mission aims to measure Solar Particles and shock waves causing severe electromagnetic storms. The mission will provide critical measurements on hazardous charged particle populations accelerated at the Sun and interplanetary space.
The Global Precipitation Measurement Core Observatory satellite has completed its check-out period and started its mission, collecting observations of rainfall and snowfall. The satellite's two science instruments have been calibrated and are now producing accurate data on weather elements such as thunderstorms.
NASA is expanding its research on hurricanes and tropical storms with the HS3 mission, using unmanned aircraft and space-based instruments to investigate processes underlying hurricane formation and intensity. The mission aims to determine the effect of the Saharan Air Layer on storm formation and intensification.
Asteroid and comet impacts can preserve the signatures of ancient life in Earthly impact debris. Researchers found fragments of leaves and preserved organic compounds in ancient impact glasses from Argentina, which could provide a snapshot of environmental conditions at the time of those impacts.
The OSIRIS-REx mission aims to find answers about the early solar system and organic materials that made life possible. The spacecraft will collect at least 2 ounces of asteroid samples and return them to Earth for scientists to study.
JILA researchers developed a new AFM probe design that improves precision and stability in picoscale force measurements. The shorter, softer probes enable rapid, precise measurements of biomolecules like proteins and DNA, allowing for the study of folding and stretching events.
A French, American team of researchers has discovered that the regolith of small asteroids is formed by thermal fatigue, a process caused by temperature cycling. This finding challenges previous theories that suggested impacts and micrometeoroid impacts were responsible for creating the asteroid's surface.
The CYGNSS mission will determine how a tropical cyclone forms and strengthen, improving hurricane forecasting and tracking. NASA has given a preliminary go-ahead to proceed with instrument development and launch of the hurricane-studying mission's eight microsatellites.
Asteroid P/2013 R3 broke apart into 10 smaller pieces as it approached the sun, with fragments drifting away at a leisurely pace. Scientists believe the asteroid's weak interior and gradual rotation rate may be responsible for its disintegration.
The Hubble Space Telescope has photographed an asteroid, P/2013 R3, breaking apart into as many as ten smaller pieces. The fragments are drifting away from each other at a leisurely 1.5 kilometers per hour, likely due to the Yarkovsky-O'Keefe-Radzievskii-Paddack effect.
Astronomers have witnessed the first-ever breakup of an asteroid into as many as 10 smaller pieces using NASA's Hubble Space Telescope. The discovery suggests that sunlight may be responsible for this type of disintegration, which is a subtle effect known as YORP torque.
Researchers at NUS created a highly sensitive fluorescence probe to detect Monoamine Oxidase B (MAO-B) activity, which is elevated in patients with Parkinson's disease. The probe can monitor the progression of the disease and has potential as a biomarker.
Researchers found a massive asteroid around PSR J0738-4042, which is being pounded by asteroids and could form planets. The asteroid's mass is about a billion tonnes, and its formation is linked to the star's intense radiation.
The MAVEN spacecraft has completed its initial checkout and is now ready to carry out its full science mission. The Mars Atmosphere and Volatile Evolution (MAVEN) mission aims to determine the role of gas escape in changing Mars' climate throughout its history.