the-heliopedia

The Heliopedia An encyclopedia of terms encountered in heliophysics science Encyclopedia Updated Jul 9, 2026 Overview Heliophysics — the study of the Sun and how it influences space — is full of exotic phenomena that shape space from the Sun to the outer edges of the solar system, billions ofContinue Reading

principal-investigator-and-quality-assessment-reports-evaluate-umbra-synthetic-aperture-radar-data

Two new reports from NASA’s Commercial Satellite Data Acquisition (CSDA) program evaluate data from the Umbra X-band Synthetic Aperture Radar (SAR) satellite constellation for the NASA Earth science research and applications community. The results of these evaluations help to inform NASA program management and the user community about the qualityContinue Reading

shanna-mcclain 

Shanna McClain  Program Manager, Disasters Dr. Shanna N. McClain is Program Manager for the NASA Earth Action Disasters program at Headquarters in Washington, D.C. In this role, she leads a dynamic team that drives the development and integration of Earth science for disaster risk reduction, response, recovery, and resilience. Dr.Continue Reading

shanna combley 

Shanna Combley  Program Manager: Energy and Infrastructure and Mission Engagement Shanna Combley is Program Manager for the NASA Earth Action Energy and Infrastructure program and the Mission Engagement program within the Earth Science Division at Headquarters in Washington, D.C. She oversees NASA’s efforts to provide actionable data and information to support decision-making relatedContinue Reading

nima pahlevan 

Nima Pahlevan  Program Manager, Private Sector Engagement Dr. Nima Pahlevan serves as the Program Manager for NASA’s Earth Action’s Private Sector Engagement program at the Earth Sciences Division at Headquarters in Washington, D.C. In this role, he connects businesses with NASA Earth Science, ensuring industry awareness of NASA assets, identifying private sector needs,Continue Reading

nasa-small-satellite-could-make-global-positioning-more-precise

The GRITSS satellite undergoes final preparations prior to launch. (Image Credit: ISISPACE) A NASA satellite the size of a suitcase, which aims to merge different observing systems and lead to more accurate mapping of Earth, launched July 7 from the Vandenberg Space Force Base in California aboard SpaceX’s Transport-17 mission.Continue Reading

trees-keep-absorbing-carbon-long-after-they-stop-growing

Oak trees keep absorbing carbon dioxide long after their annual growth has ended, revealing that photosynthesis and wood production are not as closely linked as scientists once believed. The finding could reshape forecasts of how much carbon forests will be able to store in a warmer future., Read MoreContinue Reading

for-most-us-drivers,-evs-offer-emissions-benefits-and-cost-savings

Despite regional variability in climate, electricity sources, congestion, and the wide variation in individual driving patterns, electric vehicles generate less greenhouse gas emissions and do not cost more than comparable gas-powered vehicles for drivers and vehicle fleet owners in most parts of the United States, according to a new studyContinue Reading