The mission of the National Solar Observatory is to advance knowledge of the Sun, both as an astronomical object and as the dominant external influence on Earth
outreach@nso.edu
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☀️ Ka Lā | The Sun, the Earth and Us 🌍 We’re proud to share a new @NSF documentary filmed on Haleakalā, Maui! Discover our timeless connection to the Sun and the groundbreaking science at the NSF Inouye Solar Telescope🎬: piped.video/FKzly6fIGsM
#NSFfunded #InouyeSolarTelescope
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What can a nearly 300-year-old solar eclipse teach us about the Sun today? NSF NSO Associate Director Alexei Pevtsov recently co-authored a paper analyzing 18th-century eclipse observations, highlighting why preserving historical data is crucial for studying past solar activity.
A New Look at a Centuries-Old Solar Eclipse
Handwritten eclipse observations and sketches of solar prominences from 1733 offer researchers a rare window into a data-poor period of solar history. aasnova.org/2026/09/23/a-new…
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Solar Activity Report: Sep. 14-20, 2026 ☀️
Solar activity during the reporting period remained in the very‑low to low range. At the beginning of the week, all named active regions (AR) were clustered in the western hemisphere, leaving the eastern hemisphere without sunspots.
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In addition, AR 14534 generated the strongest event of the week, a C3.7 flare, while positioned near the central meridian in the northern hemisphere. No Earth‑directed CMEs were observed.
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Solar Activity Report: Sep. 7-13, 2026 ☀️
The current solar cycle is now in its declining phase, and high‑energy flares have decreased substantially. Over the past week, the X‑ray flux level did not exceed the C category, with the strongest event being a C5.8 flare on Sep. 12.
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A glancing impact is possible on Sep. 17 from the CME associated with the long‑duration C1.4 flare on Sep. 13. Far‑side helioseismic maps do not indicate the emergence of any new major active regions rotating into Earth’s view.
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Data by NSF-NOAA GONG, operated by NSF NSO. Additional Credits: Jain/Oien/NSF/GONG/NSO/AURA, with contributions by NOAA.
#SpaceWeather #NSFfunded #NationalSolarObservatory
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☀️ A summer of science! In partnership with the Akamai Workforce Initiative and Boulder Solar Alliance REU, NSO mentors guided students through cutting-edge solar research and engineering in Hawai‘i & Colorado. Meet the students and explore their projects: nso.edu/blog/summer-of-scien…
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What if we could listen to the Sun to reveal its invisible magnetic field? NSO scientist Alin Paraschiv developed a new technique combining polarized light & waves traveling through the Sun’s atmosphere to uncover more info about its coronal magnetic field nso.edu/blog/listening-to-th…
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Solar Activity Report: Aug 24-30, 2026 ☀️
Activity varied from very low to medium levels during the reporting period. 7 M‑class flares were recorded during the first 3 days, originating from AR 14513, followed by a gradual decline to low activity.
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While most exhibit a low likelihood of appearing on the visible disk, an AR (14507 from the previous Carrington rotation) has a moderate probability of rotating onto the front side. Provided it does not decay, it is expected to return to the Earth‑facing hemisphere on Sept 4.
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Solar Activity Report: Aug 17-23, 2026 ☀️Activity ranged from low to moderate levels. The first two and last two days were relatively quiet compared to the more active middle portion of the week.
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The most active day was August 20, which featured three M‑class flares, including the strongest event of the week: an M8.1 flare. The remaining M‑class flares were low‑intensity events.
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