NASA's wonderful world!!

 

National Aeronautics and Space Administration                             December 2025 EARTHDATA DISCOVERY Open Access for Open Science                     Wishing you Seas and Greetings This Holiday Season           The Physical Oceanography and Ocean Biology Distributed Active Archive Centers Have Moved to Earthdata.                   Discover ocean data and resources on Earthdata ➞                       Articles                 Visualize Wildfires in FIRMS with a New Geostationary Layer The Fire Information for Resource Management System (FIRMS) and NASA Worldview now include the Geostationary Ring Natural Color RGB layer — a global mosaic from five geostationary satellites that offers frequent views of Earth throughout the day.

NASA's newsletter

 

NASA Newsletter In this week's newsletter, take a look at comet 3I/ATLAS through the lenses of NASA's spacecraft and space telescopes; find out when and where to watch NASA astronaut Chris Williams launch aboard the Roscosmos Soyuz MS-28 spacecraft to the International Space Station; and discover the process behind NASA's Centennial Challenges, which have awarded more than $24 million to hundreds of people ranging from academics, startup founders, and small business owners from across the U.S. and 86 countries to bring bold ideas to NASA. Plus, more stories you might have missed.   SCIENCE Through NASA’s Lenses NASA is in the midst of an unprecedented solar system-wide observation campaign, turning its spacecraft and space telescopes to follow comet 3I/ATLAS, the third known interstellar object to pass through our solar system. Twelve NASA assets have captured and processed imagery of the comet since it was first discovered on July 1, and several others will have opportunities to capture more images as the comet continues to pass through our solar system.

Γιατί μια τεράστια ανωμαλία στο μαγνητικό πεδίο της Γης προβληματίζει τη NASA

 https://www.cnn.gr/kosmos/story/506055/giati-mia-terastia-anomalia-sto-magnitiko-pedio-tis-gis-provlimatizei-ti-nasa?utm_source=notification&utm_medium=push&utm_campaign=breaking

"...Εδώ και χρόνια, η NASA παρακολουθεί μια παράξενη ανωμαλία στο μαγνητικό πεδίο της Γης: μια τεράστια περιοχή χαμηλότερης μαγνητικής έντασης στους ουρανούς, που εκτείνεται μεταξύ της Νότιας Αμερικής και της νοτιοδυτικής Αφρικής.

Αυτό το εξελισσόμενο φαινόμενο ονομάζεται Ανωμαλία του Νότιου Ατλαντικού (South Atlantic Anomaly ή SSA) και απασχολεί τους επιστήμονες εδώ και δεκαετίες, κυρίως εκείνους της NASA. Και αυτό γιατί τα διαστημόπλοια και οι δορυφόροι (συμπεριλαμβανομένου του Διεθνούς Διαστημικού Σταθμού), περνούν απευθείας μέσα από την SSA καθώς κάνουν κύκλο γύρω από τη Γη σε χαμηλή τροχιά, αναφέρει το Science Alert....."

https://www.cnn.gr/kosmos/story/506055/giati-mia-terastia-anomalia-sto-magnitiko-pedio-tis-gis-provlimatizei-ti-nasa?utm_source=notification&utm_medium=push&utm_campaign=breaking

NASA's wonderful world!!

 

National Aeronautics and Space Administration

September 2025 EARTHDATA DISCOVERY Open Access for Open Science

Airborne Data Applications for Invasive Species Mapping           In this training offered by NASA’s Applied Remote Sensing Training Program (ARSET), scientists will discuss the applications of airborne and in situ field data for mapping and monitoring terrestrial invasive species using datasets acquired during the BioSCape campaign in South Africa. The training will take place on Sept. 30, 2025.                   Learn more about the BioSCape project, an international collaboration between South Africa and the United States to study biodiversity in South Africa's Greater Cape Floristic Region. ➞                       Articles

NASA's wonderful world!!

 

August 25, 2025 Natural Events

Latest Images From the Past 7 Days view archive of natural events

A Sea Aswirl With Chlorophyll One of NASA's newest Earth-observing sensors extends and improves the continuous measurement of light-harvesting pigments in ocean surface waters. (Aug 21, 2025)       Hurricane Erin Roils in the Atlantic The major hurricane steered clear of land but delivered tropical storm conditions to coastal areas along its path. (Aug 20, 2025)

NASA's EARTHDATA DISCOVERY

 

National Aeronautics and Space Administration                             April 2025 EARTHDATA DISCOVERY Open Access for Open Science                     GLIMS Database Advances Glacier Monitoring from Space           Using NASA’s Global Land Ice Measurements from Space (GLIMS) Glacier Database, researchers worldwide can map and monitor glaciers to assess climate trends, natural hazard risk, sea level rise, freshwater resource availability, and ecosystem health and stability.                   Explore more than 200,000 glaciers around the world. ➞                       Articles                 NOAA 21 Captures Dust Moving Across the United States Spring has been an unusually active period for dust storms over the Southwestern U.S., and imagery from the Visible Infrared Imaging Radiometer Suite (VIIRS) and Ozone Mapping and Profiler Suite (OMPS) help researchers monitor and track aerosol movement in near real-time.           Sea Ice Estimates Hit New Lows According to the National Snow and Ice Data Center (NSIDC), the Arctic sea ice extent maximum for 2025 was the lowest maximum in the satellite record (starting in 1979), and the Antarctic sea ice extent minimum for 2025 was effectively tied for second-lowest in the 47-year satellite record. Both sea ice extent estimates were based on passive microwave sea ice data archived at NASA’s NSIDC Data Active Archive Center (NSIDC DAAC).

NASA Earthdata

National Aeronautics and Space Administration

March 2025 EARTHDATA DISCOVERY Open Access for Open Science

Esri Fed GIS 2025: Katie Baynes Delivers the Plenary           In her address to the Geographic Information Systems (GIS) community, our Earth Data Officer, Katie Baynes, highlights the many ways NASA’s Earth science data informs crucial action on the ground—including disaster management, agriculture planning, and air quality monitoring. View the StoryMap for a full recap.                   Earthdata provides a range of tutorials, data recipes, tools, and services to help GIS users analyze data, create maps, and develop applications. ➞                       Articles

The Harmonized Landsat Sentinel-2 Project Releases Vegetation Indices NASA’s Harmonized Landsat and Sentinel-2 (HLS) project released two new products: the Landsat 30-meter Vegetation Index and Sentinel-2 30-meter Vegetation Index. Each product contains a suite of nine vegetation indices with applications including, agriculture, forest monitoring, vegetation health, and wildfire.