Researchers used MESSENGER data to detect solar neutrons created in solar flares, providing a direct link to the flare process. The combined use of NASA mission data from MESSENGER and STEREO spacecraft offers new information about particle acceleration in solar flares.
Researchers used extensive observations to develop the first high-resolution 3D model of the Homunculus Nebula, confirming features like arm-like protrusions and trenches. The new model suggests intense interactions between Eta Carinae's stars played a significant role in shaping the nebula.
Typhoon Neoguri was analyzed by NASA's Aqua, TRMM, and CloudSat satellites, gathering data on its eye wall structure, cloud heights, and rainfall rates. The storm showed a large eye with meso vorticies and moderate to heavy rainfall south of the eyewall.
A mid-level solar flare peaked at 12:20 p.m. EDT on July 8, 2014, and was captured by NASA's Solar Dynamics Observatory. The event had an M6.5-class rating and may have affected Earth's atmosphere, potentially disturbing GPS and communications signals.
Tropical Storm Fausto strengthened quickly after forming as Tropical Depression Six-E on July 7. Satellite imagery shows the storm being pursued by a developing area of low pressure to its east, with NOAA's GOES-West satellite capturing the scene.
The Global Precipitation Measurement (GPM) Core Observatory followed Hurricane Arthur through its full life cycle, providing the first time a precipitation-measuring satellite has been able to capture its structures. GPM data showed Arthur's asymmetrical shape with spiral arms on the eastern side but not on the western side.
The release of worldwide maps of soil moisture by NASA's Aquarius instrument showcases how wetness of the land changes with seasons and weather phenomena. This data is essential for understanding the climate system and has potential applications in advancing climate models, weather forecasts, drought monitoring, and water management.
Tropical Cyclone Neoguri strengthened from a tropical storm into a supertyphoon between July 4 and July 7, with maximum sustained winds near 130 knots (149.6 mph). NASA satellites provided forecasters with visible, infrared, and microwave data on the powerful storm.
Hurricane Arthur made landfall in North Carolina on July 3, bringing powerful 'hot towers' of thunderstorms that indicate strengthening. The TRMM satellite spotted these storms before landfall, providing a 3D view of the hurricane's structure.
Tropical Storm Douglas is on a weakening trend, with decreasing thunderstorm activity and warming cloud tops. The storm's low-level circulation and shallow eye-like feature persist despite the waning uplift of air.
NASA's Aqua satellite captured a cloud-covered eye of Tropical Storm Arthur, which strengthened into a hurricane with maximum sustained winds near 75 mph. The storm's center was expected to approach the coast in the hurricane warning area tonight, July 3.
Tropical Depression 08W formed on July 3 with maximum sustained winds near 30 knots, moving west-northwestward. NASA's TRMM satellite captured rainfall data indicating strong bands of thunderstorms and heavy rainfall rates up to 2 inches per hour.
A NASA study found that populated areas show increased plant productivity, while rural areas and wildlands see little change. Human land use and factors like nitrogen fertilization drove the growth changes.
Heavy rainfall was spotted by NASA's TRMM satellite around Tropical Storm Arthur's center on July 1, with rates reaching up to 2 inches per hour. The storm is expected to strengthen into a hurricane over the next two days, affecting the southern U.S. coastline.
Tropical Storm Douglas is weakening due to cooler waters and drier air in the Eastern Pacific Ocean. The storm's maximum sustained winds have decreased to near 45 mph, with forecasters predicting a gradual decline in strength over the next day.
Tropical Storm Elida weakened to a remnant low due to strong wind shear. The National Hurricane Center reported maximum sustained winds of near 30 mph (45 kph), with the center moving southeast towards Mexico.
The new NASA images demonstrate a significant reduction in nitrogen dioxide levels across the United States over the past decade, indicating improved air quality. This decrease is attributed to regulations, technological advancements, and economic changes, despite increasing population and vehicle numbers.
A NASA model can predict and visualize the interaction between solar wind, solar radiation, and asteroid surfaces in unprecedented detail. The model adapts to complex activities and provides highly efficient simulations, potentially identifying hazards for human explorers.
Scientists have discovered the corona extends far beyond previous observations, with implications for NASA's Solar Probe Plus mission. Direct measurements of the heliosphere's inner boundary provide new insights into solar particle behavior and the origin of the solar wind.
The GOES-R satellite's solar array provides a stable platform to track the sun's movement, powering critical instruments like EXIS and ABI. The advanced spacecraft will result in more timely and accurate weather forecasts, enhancing public safety and economic health.
New observations from NASA's Hubble Space Telescope reveal small galaxies are responsible for forming a significant number of the universe's stars. This finding supports a decade-long investigation into the relationship between a galaxy's mass and its star-forming activity, providing new insights into the early universe's history.
Comet Siding Spring is producing about 2 billion water molecules per second, equivalent to filling an Olympic-size pool in 14 hours. The icy nucleus is estimated to be around 2,300 feet across, placing it at the lower end of a size range.
Researchers have discovered a rapidly moving gas streamer blocking X-rays from the galaxy's nucleus, indicating a significant decrease in radiation. This phenomenon may regulate the growth of both the supermassive black hole and its host galaxy.
Tropical Depression Hagibis regenerated and sped northeast through the East China Sea after a brief weakening. Moderate rainfall was observed at a rate of 1.4 inches per hour in its northeastern quadrant.
The TRMM satellite captured heavy rainfall in dissipating former Hurricane Cristina, with rain rates reaching almost 97 mm per hour in the northwestern side of its eye wall. The storm's powerful thunderstorms reached heights above 13.5 km, and its eye wall was broken on the eastern side.
Tropical storm Hagibis made a brief landfall in China's Guangdong Province, bringing heavy rainfall and significant precipitation. The storm dissipated over mainland China after a short lifetime, with NASA's Terra satellite capturing the event.
Former Hurricane Cristina has lost all its convection and thunderstorms, becoming a ghost of its former self. The system has weakened to a remnant low pressure area with maximum sustained winds near 20-25 knots (23-29 mph/37-46 kph) in the Eastern Pacific.
Scientists at NASA's Goddard Space Flight Center recreated key flavors from Titan's atmosphere using a recipe approach. The team successfully identified a previously unknown material, which showed strong aromatic characteristics.
Hurricane Cristina intensified rapidly on June 12 before quickly weakening the next day, with cloud top temperatures decreasing by nearly 30C. The storm's convection weakened, causing cloud heights to drop and temperatures to rise.
Tropical Storm Nanauk formed over India in June 2014 and moved northwest towards the Arabian Sea. The storm exhibited powerful storms dropping heavy rain at a rate of over 247mm/hour when observed by NASA's TRMM satellite on June 11.
A NASA-funded study suggests that cracks on Pluto's moon Charon could reveal a past underground ocean. The analysis finds that a high-eccentricity phase in Charon's orbit may have generated large tides, causing friction and surface fractures. This friction would have also caused the tides to slightly lag behind their orbital positions.
Tropical Cyclone Nanauk is experiencing strong thunderstorms with cloud top temperatures near -63F, indicating high rainfall potential. The storm will face weakening factors such as increasing wind shear, dry air, and cooler sea surface temperatures over the next few days.
Hurricane Cristina has reached Category 4 status with maximum sustained winds near 155 mph. The National Hurricane Center expects the storm to maintain major hurricane strength for another 36 hours, posing life-threatening surf and riptide conditions along Mexico's west coast.
Tropical Cyclone Nanauk strengthened over a 24-hour period, showing a well-rounded tropical cyclone with good circulation. The storm is expected to continue strengthening before encountering higher wind shear and dry air.
The sun experienced three X-class flares in two days, with the third flare peaking at 5:06 a.m. EDT on June 11, 2014. The solar activity was captured by NASA's Solar Dynamics Observatory and originated from an active region on the sun.
Heavy rainfall was observed in Tropical Storm Cristina by NASA's TRMM satellite before intensification into a hurricane. The storm is expected to strengthen further with ideal environmental conditions.
A powerful solar flare with a peak intensity of an X2.2 classification was observed by NASA's Solar Dynamics Observatory on June 10, 2014. The flare caused disturbances in the atmosphere layer affecting GPS and communications signals.
Tropical Storm Cristina was born in the Eastern Pacific Ocean near Mexico, with maximum sustained winds of 35 mph. The storm's strong thunderstorms are producing life-threatening surf and rip current conditions along western Mexico's coast.
Tropical Cyclone 02A formed in the Arabian Sea with NASA-NOAA's Suomi NPP satellite capturing a visible image of the storm. The storm is consolidating and getting better organized, with strongest thunderstorms appearing south of its center.
The TRMM-based Multi-satellite Precipitation Analysis system monitored near-real time rainfall totals for May 29 to June 6, 2014, during Tropical Storm Boris and System 90L's impact on Mexico. The satellite recorded the highest rainfall totals of over 535 mm in southern Mexico.
System 90L, a tropical low pressure area, never formed into a tropical depression but dropped heavy rainfall on eastern and southeastern Mexico. The system eventually dissipated after making landfall, resulting in gusty winds and life-threatening flash flooding.
A tropical low pressure area in the Bay of Campeche is showing signs of development, with cloud-top temperatures near -63F (-52C). The system has a 50% chance for formation, threatening southeastern Mexico with heavy rains and life-threatening flash floods.
The remnants of Tropical Storm Boris are merging with a low-pressure area in the southwestern Gulf of Mexico, according to NASA and NOAA satellite data. The system, now known as System 90L, has a medium chance of developing into a tropical depression, threatening heavy rainfall and flash flooding in southeastern Mexico.
Tropical Storm Boris strengthened into a depression before making landfall in southern Mexico, bringing heavy rainfall and flash flooding. The storm's slow movement exacerbated localized rainfall amounts, with the Mexican Weather Service reporting 12.5 inches of rainfall in one city.
Astronomers have found evidence that two classes of blazars represent different sides of the same cosmic coin, with one class being a gas-guzzling car and the other an energy-efficient electric vehicle. The team's redshift survey revealed that FSRQs began to decline while BL Lacs increased in numbers around 5.6 billion years ago.
The Advanced Topographic Laser Altimeter System (ATLAS) will measure Earth's elevation with six beams, generating a more detailed portrait than the original ICESat. Scientists will track change, including melting glaciers and sea ice, using precise height measurements.
Tropical Depression 2E has high, very cold cloud top temperatures indicating strong thunderstorms and potential for heavy rainfall. The National Hurricane Center forecasts large rainfall amounts in southern Mexico over the next couple of days.
A new tropical low pressure area is brewing in the Eastern Pacific, with heavy rainfall expected to cause life-threatening flash floods and mudslides in western Central America. The National Hurricane Center gives System 93E a 90% chance of becoming a tropical depression in the next 48 hours.
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.
The Interface Region Imaging Spectrograph (IRIS) successfully observed a gigantic coronal mass ejection (CME) on May 9, 2014. The spacecraft caught the event in extraordinary detail, revealing its unprecedented size and structure.