NASA's GOES-13 satellite captured an image of Tropical Depression Bret, Tropical Storm Cindy, and a low-pressure area associated with a tropical wave in the Caribbean. The storm system is located in two ocean basins, with Bret and Cindy racing through the North Atlantic and Hurricane Dora weakening in the eastern Pacific.
Hurricane Dora's eye was visible on multiple NASA satellites, including Aqua and GOES-11, providing forecasters with clear views of the storm's intensification. The National Hurricane Center expects some weakening by tonight and rapid weakening on Friday as Dora battles wind shear and cooler waters.
Tropical Storms Bret and Cindy are currently in the open waters of the North Atlantic, hundreds of miles east-northeast of Bermuda. Both storms show strong convection with cloud top temperatures as cold as -70 Celsius, indicating high thunderstorms.
A triple-header of tropical cyclones was captured by the GOES-13 satellite on July 20, including System 99L, Tropical Storm Bret, and Hurricane Dora. System 99L is showing signs of organization and potential to become a tropical depression in the next 48 hours.
Landsat satellites have been monitoring the Missouri River for extended periods, showing heavy rains and snowmelt causing prolonged flooding. The USGS WaterWatch website provides real-time streamflow data, highlighting the devastating impact of the flood on the region.
Two NASA satellites confirmed Tropical Storm Bret's heaviest rainfall on the eastern side of the storm, with one satellite measuring powerful thunderstorms. The storms' strength was indicated by cloud-top temperatures measured by the Atmospheric Infrared Sounder.
Astronomers using the Hubble Space Telescope have discovered a fourth moon orbiting Pluto, the smallest discovered to date. The new moon, temporarily designated P4, was found in a survey searching for rings around Pluto and has an estimated diameter of 8-21 miles.
Frigid cloud top temperatures in Hurricane Dora's thunderstorms indicate their strength and power. The storm's strong convection and rapid rising air formed a large area of very cold and powerful thunderstorms around the center.
Tropical Storm Dora has strengthened to near-hurricane strength, expected to bring life-threatening surf and rip currents to southern Mexico. Cloud top temperatures have dropped significantly, indicating increasing convection and thunderstorm activity.
Typhoon Ma-on's strong thunderstorms caused rough surf, gusty winds, and heavy rainfall along eastern coastal Japan. The storm weakened as it interacted with land and wind shear increased.
Tropical Storm Bret is experiencing a weakening convective uplift due to dry air intrusion, resulting in decreased thunderstorm intensity and cloud top temperatures of -63F (-52C). The National Hurricane Center forecasts Bret to dissipate by the weekend as it battles increasing wind shear.
Tropical Storm Bret formed in the northwestern Bahamas on July 17, strengthened into a tropical storm by July 18, and continued to intensify. The GOES-13 satellite recorded the storm's development, providing a video of its birth and strengthening process.
The NASA Aura satellite measures pollution 'butterfly' formed by nitrogen dioxide (NO2) emissions from agricultural fires in central Africa. High concentrations of NO2 were detected over the Democratic Republic of Congo and northern Angola, posing a threat to air quality and health.
NASA's Aqua satellite captured clear images of Typhoon Ma-on's eye, indicating a strong storm. The typhoon has strengthened to Category Four status with maximum sustained winds at 132 mph.
Researchers use old mathematical techniques and insights on CMEs to devise a fresh way to measure magnetic fields in the sun's upper atmosphere. By spotting a diffuse ring around a CME, they can determine the strength of the magnetic field using Alfvén speed.
Typhoon Ma-on has brought heavy rainfall to Guam, with NASA satellite data detecting powerful thunderstorms containing rainfall rates of 2 inches/50 mm per hour. The National Weather Service has issued urban and small stream flood advisories until 2 a.m. CHST.
The Hubble Space Telescope has taken anniversary pictures of Neptune, revealing high-altitude clouds in the northern and southern hemispheres composed of methane ice crystals. The images also show that cloud activity is shifting to the northern hemisphere, with seasons lasting about 40 years.
Flood warnings remain in effect along the Iowa/Nebraska border as Missouri River waters continue to rise near Omaha. NASA's Landsat 5 satellite captured an image of the affected area, showing the Interstate cut off by floodwaters just south of Missouri Valley, Iowa.
Hubble made its one millionth science observation while analyzing the exoplanet HAT-P-7b's atmosphere, revealing spectroscopic patterns that can indicate water vapor presence. The milestone marks Hubble's continued legacy in characterizing exoplanet atmospheres.
Scientists launch four NASA sounding rockets to collect data on charged particle motions and winds in the upper atmosphere. The experiment aims to understand how solar activity and electric fields drive these dynamo currents, essential for maintaining stable satellite communications and GPS signals.
The NASA Aura Satellite has tracked the spread of nitrogen dioxide from New Mexico and Arizona wildfires, providing critical data on air quality. The satellite's Ozone Measuring Instrument (OMI) detected high levels of NO2 near the Las Conchas fire in New Mexico and the Wallow Fire in Arizona.
Scientists aim to study the universe's evolution with MicroSpec, a 10,000 times more sensitive spectrometer. The instrument will analyze infrared light to identify object compositions and properties.
Tropical Storm Arlene made landfall near Cabo Rojo in northeastern Mexico on June 30 at 7 a.m. EDT, moving westward with maximum sustained winds of 65 mph. The storm caused significant rainfall, leading to flash flooding and mudslides in mountainous areas.
The James Webb Space Telescope's mirrors have been polished to accuracies of less than one millionth of an inch, crucial for forming sharpest images in space. The primary mirror, made of Beryllium, will capture light from faint, distant objects faster than any previous space observatory.
The LRO spacecraft captured a dramatic sunrise view of Tycho crater's central peak, revealing distinctive outcrops and boulders formed through impact melt. The young crater, only 110 million years old, has steep slopes that will erode over time, potentially creating smooth mountains.
A team of astronomers using NASA's Fermi Gamma-ray Space Telescope observed a unique binary system that produced dual gamma-ray flares during its closest approach. The flares were many times stronger than expected and occurred despite the star following an eccentric orbit, making them only visible every 3.4 years.
The Puyehue-Cordón volcano in Chile continues to spew ash, affecting air travel in Australia, New Zealand, and other countries. The GOES Project's satellite imagery shows the steady stream of ash three weeks after the initial eruption.
Tropical Storm Arlene formed over the southwestern Gulf of Mexico, strengthening into a full-fledged hurricane with sustained winds near 40 mph. The GOES-13 satellite captured the storm's development from June 27 to June 28, revealing its transformation from a low-pressure area to a tropical storm.
The ARTEMIS P1 spacecraft has entered lunar orbit after a two-year journey that relied on gravity boosts and minimal fuel. Engineers closely monitor the spacecraft's position, preparing for further adjustments.
Tropical Depression Meari is weakening due to wind shear and cooler sea surface temperatures as it approaches North Korea, with moderate rainfall observed by NASA's TRMM satellite. The system is expected to fall apart over the Hamgyeong Mountain Range, potentially regenerating in the Sea of Japan
Heavy rains in Canada caused historic flooding in Minot, N.D., with over 4,000 homes and businesses affected. The Souris River reached nearly four feet higher than its all-time high set in 1881.
Tropical Storm Haima is expected to bring heavy rains to Vietnam this weekend. The storm has regained minimal tropical storm status with powerful thunderstorms south of its center, moving west through the Gulf of Tonkin in the South China Sea.
Tropical Storm Meari is a stronger storm with maximum sustained winds near 55 knots, expected to make landfall in southwestern North Korea on June 26. Forecasters anticipate rough surf and heavy rainfall along the Yellow Sea as Meari tracks through.
The NASA Aqua satellite captured an infrared image of Tropical Storm Meari and Tropical Depression Haima on June 22. The image showed large areas of strong thunderstorms and convection, indicating rainfall rates of up to 2 inches per hour in both storms.
Heavy rainfall is expected in southern Taiwan, Fujian and Guangdong provinces, and Hainan Island as Tropical Depression Haima nears Hong Kong. NASA's AIRS instrument captures strong rain-making thunderstorms on the storm's southern quadrant, indicating very high, cold cloud tops and likely heavy rainfall.
The Hubble Space Telescope has captured the complex history of Pandora's Cluster, a giant galaxy cluster resulting from the simultaneous collision of four smaller clusters. The data reveal that dark matter dominates the cluster's mass, with gas making up only 5% of its total mass.
Tropical Storm Beatriz rapidly weakened after making landfall in Mexico's western mountains, transforming from a strong tropical storm to a weak tropical depression within six hours. The storm's remnants are now moving over cooler sea surface temperatures with a slim chance of regenerating due to sub-80°F waters.
Tropical Storm Meari has grown to a massive size, covering almost the entire Philippine Sea and on track for southeastern Taiwan. The storm is forecasted to strengthen over the next two days before reaching Taiwan.
NASA's Atmospheric Infrared Sounder captured a weakened Tropical Depression 06W with scattered convection and decreased winds. The storm is expected to barely maintain tropical depression strength before making landfall near Hainan Island, China.
Hurricane Beatriz developed an eye that opened on microwave imagery but closed on visible imagery, appearing to give satellites a 'wink' as it brought heavy rains and high surf to the southwestern Mexican coast. The storm strengthened into a hurricane by June 20 night and made landfall near Manzanillo, Mexico.
The Lunar Reconnaissance Orbiter has successfully completed its one-year exploration mission, providing unprecedented detail of the moon's surface and subsurface. The orbiter's instruments have captured over 192 terabytes of data, including the most precise topographic maps to date of the moon's complex landscape.
Tropical Storm Beatriz is strengthening towards hurricane status, according to NASA satellite imagery, which revealed powerful thunderstorms and cloud tops cooling. The storm is expected to bring excessive rainfall, life-threatening flash floods, and mudslides to southwestern Mexico.
System 92E is a low-pressure area in the Eastern Pacific Ocean that has gained organization and is expected to strengthen into a tropical storm. Favorable environmental conditions, including warm sea surface temperatures and light vertical wind shear, are contributing to its development.
The James Webb Space Telescope has completed its first round of cryogenic mirror testing, with six segments of the primary mirror responding to extreme temperatures. A second set of mirrors will arrive in late July for further testing, with the final set arriving in the fall.
Tropical Depression 06W has developed near the Philippines with heavy rainfall detected by NASA's TRMM satellite. The storm is expected to intensify into a tropical storm, skirt the eastern coast of the Philippines and head toward Taiwan.
The Wallow North and Horseshoe 2 fires in eastern Arizona have burned over 487,016 acres, with the Landsat 5 satellite capturing images of the blazes. The satellite's false-colored imagery helps emergency managers plan containment strategies.
The galaxy Centaurus A is home to a firestorm of new star formation triggered by shockwaves from a past collision and merger with another galaxy. Hubble's image reveals the birth of vibrant blue star clusters and compresses hydrogen gas clouds.
The EPOXI mission discovered that Hartley 2's strong activity in water release and carbon dioxide-powered jets occurred mainly at the ends of the comet, with most occurring at the small end. The study suggests that material in the waist region is likely redeposited material from the ends.
In June 2011, the Mississippi River reached historic levels, causing widespread flooding, with water remaining high in the floodplain. By early June, flooding had receded around Vicksburg, but the river's level was forecast to continue falling.
The NASA Goddard FLICKR image gallery showcases a massive ash plume from the Puyehue-Cordón Caulle volcano in Chile, tracked by multiple satellites over six days. The plume was seen circling the southern hemisphere, affecting air travel and rainfall, with ash falling as far away as Australia.