Researchers analyzed 143 billion pixels in 654,000 Landsat images to compile maps of forest loss and gain between 2000 and 2012. During this period, 888,000 square miles of forest were lost, while 309,000 square miles regrew.
Two large sunspots, AR1890 and AR1897, are active on the sun, with AR1890 producing significant flares and AR1897 nearing its appearance on Earth-side of the sun. The sun's 11-year activity cycle is increasing towards solar maximum conditions, leading to an uptick in flares.
A NASA-led mission called Firefly aims to study lightning and terrestrial gamma ray flashes from space. The instrument will gather data for up to a year, shedding light on the global electric circuit's most critical component.
Cyclone 03A has made landfall in Somalia, causing heavy rainfall and powerful surge, with NASA satellites tracking its movement and impact.
NASA presents cutting-edge computational achievements, including insights into galaxy formation and climate modeling, as well as advancements in quantum computing and space launch system design. The agency's expertise is key to mission success, enabling research on oceanic climate change and space weather.
FORTIS will observe the comet's molecules and atoms by separating incoming light into its component wavelengths, gathering information from several areas at once. The comet's rate of sublimation increases as it approaches the sun, allowing FORTIS to capture observations of this material coming off the comet.
The Philippines has experienced devastating heavy rains from Super Typhoon Haiyan and Tropical Storm 30W, resulting in over 2300 confirmed fatalities. The storm surge caused catastrophic flooding, with waters rising up to 5.2 meters in Tacloban.
Using a unique 'virtual toothpick' tool set, NASA's Vivek Dwivedi monitors the progress of atomic layer deposition (ALD) in real-time, optimizing conditions to deposit ultra-thin films. This innovation enables more cost-effective experimentation with ALD for various space applications.
Ex-tropical storm 30W has re-developed into a low-pressure area near Chennai, India, with heavy rainfall and thunderstorms expected to make landfall within the next two days. The system is moving west-southwest at 9 knots per hour, bringing up to 10 inches of rain to northern Tamil Nadu and southern Andhra Pradesh.
A significant solar flare peaked at 12:14 a.m. EST on Nov. 10, 2013, emitting harmful radiation that disturbed the atmosphere and impacted GPS signals. This X1.1 class flare is part of an active period in the sun's 11-year activity cycle, which has seen several flares since October 23, 2013.
Cyclone 03A made landfall in east central Somalia on Nov. 11 with sustained winds of tropical-storm force, before moving inland where it is dissipating over eastern Ethiopia. NASA satellites captured images of the storm before and after landfall, showing concentrated thunderstorms around its center.
Ex-Tropical Depression 30W is attempting to re-form in the Indian Ocean after dissipating over Nov. 8-10. The storm's re-generation is considered medium-probability for the next few days, with slow westward movement predicted.
The Solar Wind Electron Analyzer (SWEA) will track how charged particles, such as planetary oxygen ions, escape the planet's atmosphere. By identifying electrons in the solar wind and Martian ionosphere, SWEA can determine where the boundary layer between the two regions is located.
NASA satellites tracked Typhoon Haiyan's movement and provided rainfall data to help forecast its impact. The data showed the storm's flood potential increased significantly before its second landfall in northeastern Vietnam.
Astronomers observed two nearby supernovae, SN 2012im and SN 2013ek, in spiral galaxy NGC 6984 using NASA's Hubble space telescope. The recent image reveals the second star that has exploded, forming a new Type Ib supernova visible near the center of the galaxy.
Former Tropical Depression 30W has re-formed in the Andaman Sea, with a medium chance of redevelopment by Nov 9-10, threatening India and surrounding nations.
The NASA TRMM satellite captured detailed data on Super-typhoon Haiyan before it struck the Philippines, revealing sustained winds of up to 195 mph. The storm's extreme power was showcased in the satellite imagery, with a well-defined eye surrounded by moderate rain and multiple rainbands.
The sun recently emitted a powerful X1.1 flare, disturbing the layer where GPS and communications signals travel. Increased flares are common during the sun's peak activity cycle, which is currently ramping up toward solar maximum conditions.
Super-Typhoon Haiyan maintained its structure and remained a powerful Category 5 tropical cyclone as it exited the western Philippines. The storm brought heavy rainfall potential and thunderstorms to various regions, with warnings still in effect across the country.
NASA satellites captured high-resolution images of Super-Typhoon Haiyan, revealing a powerful eye and widespread thunderstorms. The storm's maximum sustained winds reached 165kts (190mph) with heavy rain potential due to extremely cold cloud top temperatures.
Astronomers have observed an asteroid, P/2013 P5, spouting six comet-like tails of dust, defying the typical appearance of asteroids. The unusual tail structures change dramatically in just 13 days, sparking debate over their origin and suggesting a possible rotational breakup.
NASA technologists aim to apply emerging atom-optics technology to map variations in Earth's gravity field with picometer-level sensitivity. The technology could chart changes in the gravitational field over time, providing valuable insights into climate change and water cycles.
A NASA satellite revealed intense rainfall around Super Typhoon Haiyan's eye, with rates of over 100mm/hour. The storm's powerful winds and convection patterns indicate catastrophic damage upon landfall in the Philippines.
A significant solar flare peaked at X3.3 on Nov. 5, 2013, affecting GPS and communications signals. The event is part of the sun's 11-year activity cycle ramping up towards solar maximum conditions.
NASA satellite imagery shows Tropical Depression 30W elongating as it makes landfall in southern Vietnam, with shallow thunderstorm development. The storm is expected to dissipate over the next day, but there is a chance of regeneration once its remnants move over nearby seas.
Typhoon Haiyan is intensifying quickly as it moves through the Philippine Sea, with rainfall rates reaching up to 50-60 mm/hour near the center. NASA's TRMM satellite provided data on the storm's northeastern quadrant, revealing some thunderstorms reached heights of over 10 km.
NASA's Aqua satellite detected multiple bushfires in Wollemi National Park, located northwest of Sydney, on November 4. The MODIS instrument captured images showing a large area of smoke and heat from the fires.
NASA's Aqua satellite detected warm sea surface temperatures and low wind shear, allowing Tropical Depression 30W to intensify into a tropical storm. The storm's maximum sustained winds reached 35 knots/40 mph on November 5.
Tropical Depression 30W, also known as Wilma, formed and moved through the Visayas region of the Philippines. NASA's Aqua satellite captured infrared images showing the depression's potential for heavy rainfall, particularly in the central Philippines.
Tropical Storm Sonia formed on Nov. 1 and made landfall in western Mexico by Nov. 4, with NASA capturing its brief life in a 36-second animation. The storm's maximum sustained winds reached 45 mph, but it weakened as it moved over rugged terrain.
Tropical Storm Haiyan is strengthening due to warm waters and low wind shear, expected to intensify to a powerful typhoon before landfall in the Philippines on Nov 8. The Joint Typhoon Warning Center forecasts Haiyan will have maximum sustained winds of near 45 knots/51.7 mph/83.3 kph.
Before hitting wind shear, NASA's TRMM Satellite observed heavy rainfall in Typhoon Krosa, with rain rates exceeding 116mm/hour. The storm weakened significantly over the South China Sea, making landfall far south of Vietnam on Nov. 5.
Typhoon Krosa strengthened after passing over northern Philippines and expanded its eye by 10 nautical miles. The storm's center moved into the South China Sea, where NASA's Aqua satellite captured a visible image revealing its 35-nautical-mile-wide eye.
A new tropical depression formed in the Eastern Pacific Ocean on November 1, with NASA's TRMM satellite detecting moderate rainfall and NOAA's GOES-West satellite capturing cloud extent. The depression is expected to strengthen and become a tropical storm by the weekend.
Researchers are mapping Greenland's ice sheet and surrounding Arctic sea ice using a single season of summer melt data. The study aims to provide baseline measurements for future satellite missions.
The ABI will offer faster imaging with much higher detail, enabling more accurate forecasts of severe weather and other hazards. The instrument's improved capabilities will help save lives and protect communities from extreme weather events.
The HyperSpectral Imager for Climate Science (HySICS) has made its inaugural engineering balloon flight, collecting radiance data for nearly half of its eight and a half hour flight. This technology advance enables climate predictions and trends to be seen with higher accuracy using shorter duration data sets.
Researchers found iron concentration is uniform across Perseus Galaxy Cluster, indicating widespread dispersal of heavy elements in the early universe. The team attributes this to supernova explosions and active black holes, suggesting a period of intense cosmic activity.
Typhoon Krosa made landfall in extreme northern Luzon, bringing strong winds and heavy rainfall. The storm's center was located near Manila, Philippines, with maximum sustained winds of 90 knots.
Tropical Storm Krosa is intensifying as it approaches the northern Philippines, prompting warnings from PAGASA. The storm is expected to make a brief landfall over extreme northern Luzon on Oct. 31 before moving west into the South China Sea.
Tropical Depression Raymond decoupled from its mid-level circulation center, weakening due to cooler sea temperatures and dry air. The storm's lower level circulation has pushed away from the center, causing it to weaken further.
The sun emitted its fourth X-class flare since October 23, 2013, peaking at 5:54 p.m. on October 29, 2013. The X2.3 class flare may disrupt radio signals for hours due to its intense radiation.
Scientists at NASA's Goddard Space Flight Center are developing the world's first spaceborne sodium lidar to illuminate the complex relationship between Earth's chemistry and mesosphere dynamics. The instrument will provide higher-resolution data on the small-scale dynamics occurring in the upper atmosphere.
NASA's infrared imagery reveals signs of organization and strengthening in Tropical Depression 29W over the Philippine Sea. The system is expected to move west and cross over Luzon as a tropical storm on October 31, potentially intensifying into a typhoon in the South China Sea.
Tropical Storm Raymond's maximum rainfall intensity was only about 33.6mm/hour, and its winds weakened to near 50mph/85kph on Oct. 29. The storm is expected to become a remnant low in a day or so due to cooler ocean temperatures and southwesterly wind shear.
The sun continues to produce mid-level and significant solar flares, including an X1.0 flare on Oct. 27 and an M5.1 flare on Oct. 28, potentially impacting Earth's atmosphere and electronic systems. The recent activity is part of the sun's normal 11-year activity cycle.
NASA's Aqua satellite captured the last image of Typhoon Lekima before it weakened into an extra-tropical cyclone. The typhoon maintained its eye and surrounded clouds, but its winds were rapidly decreasing.
LLCD successfully transmitted data from lunar orbit to Earth at a rate of 622 Mbps, more than six times faster than previous radio systems flown to the moon. The demonstration validated laser communication technology for future space missions.
The first tropical cyclone of the Southern Indian Ocean season formed on October 27 and dissipated by October 28. The storm was characterized by an elongated low-level circulation center battling wind shear.
Bushfires continued raging in New South Wales, with over 116,000 hectares burned. The MODIS instrument on NASA's Terra satellite detected heat from the fires and showed a large area of smoke in the Wollemi National Park.