Solar Activity Report: Oct. 12 -18, 2026 Solar activity remained predominantly at low levels throughout the reporting period, except on October 16, when activity briefly reached moderate levels following an M1.3 flare from active region 14551, the largest event of the week.

Solar Activity Report: Oct. 5-11, 2026 ☀️ Activity varied substantially, rising from low to high and then returning to low levels. Such variability is typical of the declining phase of the solar cycle, when sudden bursts of enhanced activity are common.

☀️ A new 3D solar eruption model wins a NASA award! 🏆 Created by @NSF @NSO, @NASAGoddard & @USNRL, “CHAR” is a revolutionary methodology enabling a new era of reliable #spaceweather forecasting. Read the full story: nso.edu/blog/nasa-award-char…

Solar Activity Report: Sep. 28-Oct. 4, 2026 ☀️As solar cycle continues its declining phase, magnetic activity has decreased significantly. Solar activity remained at very‑low to low levels throughout the reporting period.

Two papers from the @NSF NSO engineering team detail vital updates to the NSF Inouye Solar Telescope’s cooling systems. Smart automation upgrades across 7 miles of piping ensure the observatory runs efficiently and sustainably ☀️🛠️ nso.edu/blog/taming-the-sun-…

Solar Activity Report: September 21-27, 2026 Solar activity remained at low levels during the reporting period, with X‑ray flux generally at mid‑B levels except for a few impulsive low C‑class flares.

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.

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.

☀️ 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…

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…