Tropical Storm Narelle is weakening as it moves south along Western Australia's coast, according to NASA. The storm's rainfall rates have decreased, and its eye has become cloud-filled.
A new computer program, LandTrendr, has successfully teased out subtle changes in forest ecosystems by analyzing vast amounts of scientific data. By comparing satellite images to ground data, scientists uncovered the cause of slow-moving declines and recoveries of trees in Pacific Northwest forests.
NASA's research models show that the CMEs left the sun at speeds of 275 miles per second, causing geomagnetic storms when they connect with the Earth's magnetic envelope. The recent flares caused weak radio blackouts, but their effects have already subsided.
Tropical Cyclone Emang developed with strong convection and moderate to heavy rainfall around its center. The storm is expected to slowly intensify over the next couple of days as it travels over open ocean, reaching peak intensity by the end of the week.
Tropical Cyclone Narelle has formed a well-formed storm center with an approximately 15 nautical mile-wide eye, according to NASA's Terra satellite. The cyclone's maximum sustained winds have increased to 115 knots, making it a Category 4 hurricane on the Saffir-Simpson Scale.
The Landsat Data Continuity Mission will extend over 40 years of global land observations, critical in energy and water management, forest monitoring, and disaster recovery. The mission's instruments, including Operational Land Imager and Thermal Infrared Sensor, promise improved data quality and quantity.
Tropical Cyclone Narelle is gaining strength as it approaches the northern coast of Western Australia, with NASA tracking its movement and expected impact. The cyclone is predicted to bring heavy rainfall and rough seas, posing a threat to coastal communities and causing erosion and flooding.
NASA's Robotic Refueling Mission aims to demonstrate robotic refueling in space, which could add years of functional life to satellites and expand options for operators. The mission will employ the Canadian-built Dextre robot and NASA's RRM module to simulate robotic refueling, with a focus on improving satellite servicing capabilities.
The team used archival data from NASA's GALEX mission to study the galaxy's size and structure. They discovered a tidal dwarf candidate in the northeastern arm, which is bright in ultraviolet light and contains hot young stars less than 200 million years old.
Tropical Cyclone Narelle is intensifying as it moves southwest paralleling the Western Australian coastline, according to NASA satellite imagery. The cyclone is expected to strengthen over the next two days, bringing gales with gusts of up to 100 kph and heavy rainfall along the Pilbara coastline.
Astronomers discovered a mysterious planet circling the nearby star Fomalhaut with an unusual elliptical orbit. The team hypothesizes that another undetected planet may have gravitationally ejected Fomalhaut B, sending it on a collision course with a vast dust ring.
Tropical Cyclone Narelle intensified into a tropical storm after NASA's TRMM satellite detected strong thunderstorms and 'hot towers' indicating intensification. The storm is expected to continue intensifying, potentially reaching wind speeds of 130 knots in three days.
Tropical Depression Sonamu is showing signs of weakening due to increased wind shear, with maximum sustained winds near 30 knots. The storm's slow movement to the southeast is expected to continue until landfall on Jan. 10 in Malaysia.
Scientists used Cluster data to study the spatial characteristics of turbulence in the solar wind, finding evidence of small 'current sheets' that dissipate magnetic energy into heat. These current sheets play a crucial role in the dissipation of turbulence, contributing to the overall heating of the solar wind.
Astronomers have found gamma-ray flares originating 70 light-years away from a galaxy's central black hole, contradicting the long-held theory that such events occur only close to the black hole. The 2011 flares from galaxy 4C +71.07 provide the clearest evidence of this phenomenon.
NASA's Aqua satellite detected a tropical depression with reduced cloud cover due to dry air, indicating a rapidly deteriorating low-level circulation center. The storm is expected to dissipate over the next couple of days in the South China Sea due to wind shear and dry air
Cyclone Dumile is moving southward over the open ocean, generating rough seas with wave heights of up to 32 feet. The storm's eye has become ragged, indicating it may weaken as it transitions to an extra-tropical storm.
Tropical Storm Sonamu intensified over the eastern South China Sea, moving westward with maximum sustained winds near 35 knots. The storm is expected to peak in intensity on January 5 before weakening due to increasing vertical wind shear, making landfall early next week in east central Malaysia.
Tropical Depression Sonamu forms in western North Pacific Ocean, located about 185 nautical miles northwest of Zamboanga, Philippines. The storm is expected to cross southern Palawan before moving into the open waters of the South China Sea.
Cyclone Dumile made landfall on La Reunion and Mauritius, bringing heavy rain, strong winds, and rough seas. The storm's eye had formed by Jan. 2, with satellite imagery showing a ring of coldest clouds around the center.
Post-tropical Storm Freda has weakened significantly over three days, from a powerful cyclone to a remnant low pressure area. NASA satellites captured the storm's decline, showing strong thunderstorms and heavy rainfall in New Caledonia.
Cyclone Freda intensified over the Southern Pacific Ocean due to warming waters, with NASA satellites measuring increased rainfall and a widening eye. The storm's maximum sustained winds reached 105 knots, posing a threat to Vanuatu with heavy rainfall and gusty winds.
The UVOT telescope on NASA's Swift satellite has captured over 100 breathtaking images of the cosmos, including comets, star clusters, and supernova remnants. These images provide valuable data for scientists studying gamma-ray bursts, stellar evolution, and the properties of rare stars.
Tropical Depression Wukong is struggling to survive in the South China Sea, with NASA satellite data showing moderate rainfall near its center. The storm is moving west-southwest and is expected to dissipate over the next day or two, according to forecasters at the Joint Typhoon Warning Center.
NASA's Hubble Space Telescope has been providing amazing images of the universe since April 1990, while the next-generation James Webb Space Telescope will reveal mysteries of the universe in much greater detail. The new free e-Books offer interactive resources and insights into both telescopes' science and technology.
A massive low-pressure area dropped over a foot of snow in some Midwestern states, prompting severe warnings and weather advisories. The AIRS instrument on NASA's Aqua satellite captured an infrared image showing the heaviest precipitation areas at -63.6°F (-53.5°C) near New England states.
Cyclone Evan has been blown apart by strong wind shear, a rare and devastating occurrence for the region. The storm's remnants were captured by NOAA's GOES-15 satellite on December 20, revealing the extreme impact of wind shear on its structure.
The Landsat 8 satellite, part of a 40-year record of change measurement from space, will continue to observe the planet in critical sectors like energy and water management. The satellite carries advanced instruments for land observation, including thermal imaging and coastal monitoring.
Researchers used NASA's Operation IceBridge data to correct forecast models and improve seasonal predictions. The new quick look data product, released before the end of the Arctic campaign, supplements final sea ice data and enables more accurate forecasts.
Cyclone Evan weakened from Cyclone strength to Tropical Storm strength over a 36-hour period, according to NASA's infrared images. The storm showed changes in intense thunderstorms, with cloud top temperatures warming and evaporation decreasing due to wind shear and cooler sea surface temperatures.
A NASA TRMM satellite found an unusually tall storm-cell in Cyclone Evan's eyewall, extending 17 km above the ocean surface. This rare feature was previously thought to occur only over land, but continuous observations have revealed its existence over the ocean.
Cyclone Evan is one of the strongest to affect Fiji in almost two decades, causing widespread damage and flooding. The Joint Typhoon Warning Center uses NASA satellite data to forecast its path, which may be the strongest storm to hit Fiji since 1993.
TRMM satellite data shows a complete eyewall in Tropical Cyclone Evan, suggesting rare system strength. Radar reflectivity analysis indicates the storm did not intensify despite a strong radar signal.
Tropical Cyclone Evan is intensifying, bringing hurricane-force winds and heavy rainfall to the Samoan Islands. The storm's clear eye wall is generating intense rainfall rates of over 80 mm per hour.
A new study using data from NASA's Swift satellite and Fermi Gamma-ray Space Telescope shows that high-speed jets launched from active black holes possess fundamental similarities regardless of mass, age or environment. The result provides a tantalizing hint that common physical processes are at work.
Tropical Cyclone Evan's eye-like structure was observed on Dec. 11 by TRMM's Precipitation Radar, indicating powerful storms and heavy rainmakers. By Dec. 13, Evan had intensified, with maximum sustained winds reaching 90 knots, and its eye being approximately 6 nautical miles wide.
Astronomers have detected radio-emitting jets from a stellar-mass black hole outside our galaxy, providing insight into extreme accretion rates. The discovery sheds light on the nature of ultraluminous X-ray sources and their connection to black hole binaries.
Tropical Storm Evan has caused regional warnings to be posted in American Samoa and Fiji, with a gale warning and storm watch in effect. The strongest thunderstorms are located around the center of circulation and in a band of thunderstorms north and east of the center.
Astronomers have discovered a previously unseen population of seven primitive galaxies that formed more than 13 billion years ago. The galaxies were observed using Hubble's Wide Field Camera 3 in near-infrared light, allowing researchers to study the early universe.
The EUNIS mission will gather data on the sun's corona by observing extreme ultraviolet light over a six-minute flight, providing insights into temperature ranges of solar plasma. The instrument will observe wavelengths from 525 to 630 Angstroms, covering temperatures from near the surface to millions of degrees Fahrenheit.
Typhoon Bopha dissipated in the South China Sea due to increased wind shear, weakening its strong thunderstorms and reducing its impact on the Philippines. The NASA Aqua satellite provided critical infrared data showing a significant decline in the storm's area of strongest thunderstorms.
NASA's Aqua satellite captured clear images of Cyclone Claudia's eye, showing a 10 nautical mile wide storm surrounded by powerful thunderstorms. The storm's eye was characterized by high cloud top temperatures and intense rainfall.
Typhoon Bopha re-intensified in the South China Sea after making a loop, with coldest cloud tops indicating strongest storms. The typhoon's eye was about 11 nautical miles in diameter and maximum sustained winds reached 110 knots.
Tropical Cyclone Claudia is currently located near 14.3 south latitude and 75.4 east longitude, about 445 nautical miles south of Diego Garcia. The storm is expected to weaken over the weekend due to cooler waters and increasing vertical wind shear.
Bright areas in Western Australia are caused by wildfires, confirmed by satellite data and composite imaging. The fires, detected over nine days in April and 13 days in October, appear as a massive blaze due to cumulative lighting.
Scientists with NASA's Goddard Space Flight Center have restored the fully calibrated digital dust data from the Apollo 14 and 15 missions, allowing for long-term analysis of the lunar dust readings. This achievement is part of the Lunar Data Project, which aims to make scientific data from Apollo available in modern formats.
The Fermi Gamma-ray Space Telescope has improved its ability to detect terrestrial gamma-ray flashes, which are brief outbursts of high-energy light produced above thunderstorms. The enhanced detection rate revealed that TGFs also generate a strong burst of radio waves, changing how scientists study this phenomenon.
Typhoon Bopha's heavy rains caused severe flooding and landslides in the southern Philippines, killing hundreds of people. The TRMM satellite's data showed the heaviest rain was located near eastern Mindanao, with rainfall totals over 100mm covering a large area.
The NASA-NOAA Suomi NPP satellite has released a global composite image that shows the glow of natural and human-made sources across the planet. The high-resolution images reveal valuable data for researchers studying weather conditions, such as fog and low clouds, that are difficult to detect with traditional sensors.
Scientists use satellite data to map plant stress, providing early warning signs of drought. The maps can aid in drought forecasts and help farmers make practical decisions sooner.