Tropical Depression Khanun made landfall in western South Korea on July 19, bringing heavy rainfall and thunderstorms. The satellite tracked the northeastern progression of the cyclone as it moved toward North Korea and northeastern China, eventually dissipating due to atmospheric conditions.
The TRMM satellite observed hurricane remnants dissipating in cool Eastern Pacific waters due to upper-level winds and surface temperatures below the necessary threshold for tropical cyclone maintenance. The remnants contained only light to moderate rainfall, located north of the low-pressure center.
A mid-level solar flare, classified as M7.7, was detected by NASA on July 19, 2012, causing brief radio communications blackouts at the poles. Increased numbers of flares are expected during the sun's peak activity cycle, which is approaching its maximum in 2013.
Tropical Depression Khanun made landfall in South Korea on July 19, bringing heavy rainfall and strong winds that caused widespread flooding and power outages. The storm's remnants moved over the Sea of Japan by 11 a.m. EDT, leaving behind significant damage and one reported fatality.
IRVE-3 is the third in a series of suborbital flight tests for an innovative heat shield technology. The experiment aims to create an aeroshell using high-tech inner tubes and a thermal blanket, protecting a payload with camera gear, telemetry equipment, and steering mechanisms.
A new technique developed by NASA scientist Nicholeen Viall uses color-coded images to track the 12-hour history of cooling and heating on the sun. The technique reveals that coronal heating is likely caused by numerous nanobursts of energy, lending credence to those theories.
NASA's Aqua satellite data shows Fabio with very little strong convection and heavy rainfall, moving north of its center. Sea surface temperatures are too cold to support a tropical cyclone, and the storm is expected to dissipate in a couple of days.
Researchers have discovered a type of plasma wave moving faster than expected, suggesting electrical instabilities may be driving the waves. This finding could lead to a better understanding of how heat and energy are transferred through plasma.
Tropical Storm Khanun is weakening as it approaches a landfall in western South Korea, bringing heavy rainfall and high seas. The storm is expected to make landfall just south of the North Korean border and then rapidly weaken.
Tropical Storm Fabio is expected to bring scattered showers and thunderstorms to southern California as it approaches the coast. NASA's Aqua satellite data indicates the storm has weakened due to cooler ocean temperatures.
The RBSP mission seeks to characterize the Van Allen Radiation Belts, which contain 99% of the universe's electrified gas. The study will address questions about particle origins, mechanisms giving them extreme speed and energy, and their effects on Earth's magnetosphere.
Tropical Storm Khanun is expected to increase in power and affect South and North Korea as it moves northward through the Yellow Sea. The TRMM satellite provided a 3-D view of Khanun's rainfall structure, showing powerful convective storms near the center pushing to heights of about 17 kilometers.
Remnants of Hurricane Emilia appear as a light swirl of clouds about 800 miles east-southeast of Hilo, moving west at close to 20 mph. Conditions are not favorable for re-development, and the storm is expected to weaken to depression status in cooler waters.
Tropical Cyclone Khanun strengthened after passing over the Aqua satellite on July 15, 2012, with organized thunderstorms and low cloud top temperatures indicating potential for heavy rainfall.
The remnants of Tropical Storm Daniel are visible on satellite imagery as a ghost-like swirl of clouds, heading towards Hawaii. The system is forecast to pass south of the state without affecting it.
NASA's TRMM satellite observed hot towers within Tropical Depression 06E, which later became Tropical Storm Fabio. The research found that storms with hot towers were twice as likely to intensify within six hours than those without.
The Moderate Resolution Imaging Spectroradiometer (MODIS) instrument captured a visible image of Hurricane Emilia on July 12, revealing an eye with high clouds overhead. Infrared data from the Atmospheric Infrared Sounder (AIRS) instrument showed powerful thunderstorms and cold cloud tops surrounding the eye of the hurricane.
Tropical Storm Daniel, once a hurricane, is weakening due to moving over cooler waters in the Pacific Ocean. NASA's TRMM satellite data shows light to moderate rainfall with average Sea Surface Temperatures of around 24-25 C.
Hurricane Emilia has weakened to a Category 2 hurricane with maximum sustained winds of 105 mph, as it moves west-northwest at 10 mph.
The discovery of the new moon provides additional clues for unraveling how the Pluto system formed and evolved. The team is using Hubble's powerful vision to scour the Pluto system to uncover potential hazards to NASA's New Horizons spacecraft.
Astronomers discover that small dwarf galaxies in the Milky Way contain only a few stars and share the same birth date, indicating they were shut down by reionization. The relic galaxies provide evidence for a transitional phase in the early universe.
NASA's GOES-15 satellite captured an image of three tropical systems chasing each other in the eastern Pacific Ocean, with Tropical Storm Daniel and Hurricane Emilia at the center. The system is expected to weaken to tropical depression status by July 11.
Cloud top temperatures around Hurricane Emilia's eye were measured to be colder than -94F, indicating high-energy storms. NASA's Aqua and Terra satellites tracked the hurricane's rapid strengthening and weakening phases.
Two hurricanes, Daniel and Emilia, are being tracked by NASA's TRMM satellite, which showed intense rainfall in Emilia's northwestern quadrant. Hurricane-force winds extend only 25 miles from the center of both storms, with Emilia expected to intensify further
The Suomi NPP satellite is now providing 'direct broadcast' data to users in real-time, enabling quick evaluation of regional events such as forest fires and flooding. This data is used by organizations like the USDA Forest Service to produce fire mapping products and inform decision makers.
NASA's TRMM satellite revealed heavy rain falling around the southern periphery of Tropical Storm Daniel's center, reaching rates of over 2 inches/50 mm per hour. The storm is moving westward into the open waters of the eastern Pacific, with maximum sustained winds increasing to 65 mph.
The HI-C mission will observe the solar corona at a resolution of up to 100 miles, surpassing existing instruments. The telescope's finely crafted mirrors, some of the best ever made, will capture structures in the sun's atmosphere with unprecedented detail.
A recent M-class flare from Sunspot 1515 caused a moderate radio blackout, affecting high- and low-frequency radio communication and GPS signals. The flare was classified as an M6.1, approximately half the size of weakest X-class flares.
A powerful summer derecho moved from Illinois to the Mid-Atlantic states, bringing destruction and wind gusts of up to 90 mph. NASA satellites captured the event's progression and aftermath, including extensive power outages and massive blackouts.
Tropical Storm Daniel formed off western Mexico's coast and strengthened into a tropical storm, with NASA's TRMM satellite capturing images of its rainfall and towering clouds. Research shows that a hot tower in the eyewall is twice as likely to intensify within six hours than without one.
Astronomers have observed a young star, V1647 Orionis, exhibiting intense X-ray activity in the McNeil's Nebula, driven by strong magnetic fields. The star's rapid rotation is also evident in its X-ray emission patterns.
The Solar Ultraviolet Magnetograph Investigation (SUMI) mission aims to study the intricate magnetic fields in the sun's chromosphere, a hard-to-observe area of the sun's low atmosphere. By observing ultraviolet light, SUMI will create a three-dimensional magnetic map of the region.
Tropical Depression 21P developed in the South Pacific Ocean between Papua New Guinea and the Solomon Islands. The TRMM Satellite captured rainfall data and cloud heights, revealing a small but organized tropical cyclone with intense convective storms dropping heavy rainfall.
Hi-C will capture the highest-resolution images of the sun's corona, providing unprecedented views of dynamic activity in the solar atmosphere. The mission aims to understand coronal heating and structuring, placing significant new constraints on theories.
Scientists add an extra second to the UTC time standard to account for Earth's rotating day lengthening due to tidal forces. The 35th leap second is added to keep UTC within 0.9 seconds of UT1, which relies on precise VLBI measurements.
Tropical depression Dokuri has weakened but remains a threat to the Philippines, with strong convection and thunderstorms being pushed away from its center. NASA's infrared satellite imagery shows cold cloud top temperatures indicating strong uplift, and warnings are in effect for several provinces.
Tropical Storm Debby caused widespread flooding and heavy rain in Florida, with the highest rainfall totals exceeding 380 mm (~15 inches). The storm's effects were felt well away from its center, resulting in an outbreak of tornadoes over central and southern Florida.
Astronomers detected significant atmospheric variations on HD 189733b due to a stellar flare, with gas escaping at speeds over 300,000 mph. The discovery provides insights into the interaction between a star and its giant planet.
Debby has weakened due to interactions with land, losing organization and moving towards the Atlantic Ocean. The storm brought heavy rain and flooding to northern Florida, causing damage to Interstate 10.
The Waldo Canyon Fire has burned over 15,517 acres near Colorado Springs, forcing evacuations of at least 32,000 people. NASA satellites continue to provide coverage of the fire, which is currently being battled by over 750 firefighters.
Neil Gehrels, a NASA astrophysicist, receives the Committee on Space Research Harrie Massey Award for his pioneering contributions to gamma-ray astronomy. The award recognizes his leadership role in advancing astronomers' understanding of gamma-ray bursts.
TRMM satellite data shows Debby's heaviest rains were falling at a rate of over 2 inches per hour, with numerous reports of 6-10 inches of rain already reported. The storm is expected to bring very heavy rains to northern and central Florida.
Tropical depression Doksuri was born in the western North Pacific Ocean on June 26, 2012. The NASA Terra satellite captured an infrared image revealing higher thunderstorms around the center of the cyclone.
Astronomers found a rare gravitational arc behind an extremely massive galaxy cluster 10 billion light-years away, defying statistical expectations. The arc is the result of powerful gravity distorting light from a more distant galaxy, offering insight into the early universe's conditions for massive cluster growth.
Fires raged in southwestern and northeastern Colorado, with the High Park Fire consuming 83,205 acres, the second-largest fire in Colorado history. The Weber Fire burned approximately 8,300 acres, while the Little Sand Fire had been burning for weeks, threatening nearly 200 people.
A new study using Cassini images shows that turbulent jet streams on Saturn are powered by internal heat from the planet. The condensation of water vapor in mid-latitudes creates temperature differences, leading to eddies that accelerate the jets like rotating gears.
NASA captures satellite images of Tropical Storm Debby covering the entire state of Florida with a large white blanket of clouds. The storm is expected to continue crawling to the northeast, bringing heavy rainfall and tropical-storm-force winds to the region.
Multiple large fires are burning across western US states, with NASA's Aqua satellite capturing images of smoke and hot spots. The High Park Fire in Colorado has burned over 68,200 acres, while the Poco Fire in Arizona has burned over 11,950 acres.
NASA's Aqua satellite data revealed that sea surface temperatures of 290 Kelvin (62°F) in the area where Chris is located were not sufficient to maintain its strength. As a result, Chris weakened and became a post-tropical storm with maximum sustained winds near 45 mph.
Tropical cyclone System 96L is intensifying off the Yucatan Peninsula, with a 70% chance of becoming a tropical depression by weekend. NASA predicts heavy rains and localized flooding along US Gulf Coast.