Tag: Earth

When lightning bolts collide, do they unleash powerful gamma-ray flashes?

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The most powerful explosions in the known universe come from what are known as gamma-ray bursts — though they may not sound particularly exciting, scientists usually speak about these incredible blasts of electromagnetic radiation in the same breath as giant collapsing stars and black holes. We’ve catalogued quite a few of these events since the 1960s, and even used them to help us understand more about galaxy superclusters, but one particular kind of gamma-ray burst has remained somewhat of a mystery. It’s called a terrestrial gamma-ray flash (TGF), and it…

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Solar storms and cyberattacks can both cause blackouts. Knowing the difference could save billions of dollars

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Space weather and cyberattacks can cause similar disruption to our civilization’s indispensable technology systems. Telling one from the other swiftly and reliably can make billions of dollars’ worth of difference to economies that could grind to a halt when such disruptions occur. Shortly after noon on April 28, the whole of Europe’s Iberian Peninsula plunged into darkness. An unknown incident shut down power grids serving Spain, Portugal and parts of Southern France. In an instant, the working day was over for millions of people as anything not powered by a…

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NASA Satellite Images Could Provide Early Volcano Warnings 

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5 min read Preparations for Next Moonwalk Simulations Underway (and Underwater) Chaitén Volcano in southern Chile erupted on May 2, 2008 for the first time inn 9,000 years. NASA satellites that monitor changes in vegetation near volcanoes could aid in earlier eruption warnings. Jeff Schmaltz, MODIS Rapid Response Team, NASA Goddard Space Flight Center Scientists know that changing tree leaves can indicate when a nearby volcano is becoming more active and might erupt. In a new collaboration between NASA and the Smithsonian Institution, scientists now believe they can detect these changes…

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Trump administration cancels lease for NASA’s Goddard Institute for Space Studies lab in New York City

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It would appear that the latest wave of U.S. federal program cuts fueled by the Trump administration has affected NASA’s Goddard Institute for Space Studies (GISS) lab in New York City, a branch of the agency dedicated to studying climate change and other Earth sciences. On Friday (April 25), news outlets such as CNN and SpaceNews reported that GISS’s lease on office space in a Columbia University building in Manhattan’s Upper West Side is set to be canceled. According to SpaceNews, an April 24 email sent to Goddard employees and…

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NASA Airborne Sensor’s Wildfire Data Helps Firefighters Take Action

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5 min read Preparations for Next Moonwalk Simulations Underway (and Underwater) NASA’s AVIRIS-3 airborne imaging spectrometer was used to map a wildfire near Cas-tleberry, Alabama, on March 19. Within minutes, the image was transmitted to firefighters on the ground, who used it to contain the blaze. NASA/JPL-Caltech, NASA Earth Observatory The map visualizes three wavelengths of infrared light, which are invisible to the human eye. Orange and red areas show cooler-burning areas, while yellow indicates the most intense flames. Burned areas show up as dark red or brown. NASA/JPL-Caltech, NASA…

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The newest GOES weather satellite in NOAA’s fleet is now fully operational (video)

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The final satellite in NOAA’s GOES-R weather satellite series has a new place in orbit … and a new name. The GOES-19 weather satellite, which launched into orbit in June 2024, has officially taken the place of its predecessor GOES-16 to watch over the Western Hemisphere from its perch 22,236 miles (35,785 kilometers) above us. To mark the milestone, the satellite has the new name of GOES East to serve as the dominant geostationary satellite in the fleet, NOAA officials said in a statement. “With GOES-19 now in operation, NOAA…

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North America is ‘dripping’ down into Earth’s mantle, scientists discover

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An ancient slab of Earth’s crust buried deep beneath the Midwest is sucking huge swatches of present-day’s North American crust down into the mantle, researchers say. The slab’s pull has created giant “drips” that hang from the underside of the continent down to about 400 miles (640 kilometers) deep inside the mantle, according to a new study. These drips are located beneath an area spanning from Michigan to Nebraska and Alabama, but their presence appears to be impacting the entire continent. The dripping area looks like a large funnel, with…

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Earth’s sea ice hits all-time low, NASA satellites reveal

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New research from NASA and the National Snow and Ice Data Center (NSIDC) in Colorado measured Arctic sea ice cover on March 22, during what should’ve been its annual peak. In conclusion, the agency reported seeing 5.53 million square miles (14.33 million square kilometers) of sea ice — for context, that’s the lowest Arctic winter sea ice levels have ever been. To make matters worse, NASA scientists also discovered that, this year, summer ice in the Antarctic retreated to 764,000 square miles (1.98 million square kilometers) as of March 1,…

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Next-Generation Water Satellite Maps Seafloor From Space

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6 min read Preparations for Next Moonwalk Simulations Underway (and Underwater) Located off the coast of Ecuador, Paramount seamount is among the kinds of ocean floor features that certain ocean-observing satellites like SWOT can detect by how their gravitational pull affects the sea surface. NOAA Okeanos Explorer Program More accurate maps based on data from the SWOT mission can improve underwater navigation and result in greater knowledge of how heat and life move around the world’s ocean. There are better maps of the Moon’s surface than of the bottom of…

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NASA Researchers Study Coastal Wetlands, Champions of Carbon Capture

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Earth (ESD) Earth Explore Explore Earth Science Climate Change Air Quality Science in Action Multimedia Image Collections Videos Data For Researchers About Us 8 Min Read NASA Researchers Study Coastal Wetlands, Champions of Carbon Capture Florida’s coastal wetlands are a complex patchwork of ecosystem — consisting of sawgrass marshland, hardwood hammocks, freshwater swamps, and mangrove forests. Credits: NASA/ Nathan Marder Across the street from the Flamingo Visitor’s Center at the foot of Florida’s Everglades National Park, there was once a thriving mangrove population — part of the largest stand of…

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