density: 3.12 protons/cm3more data: ACE, DSCOVR Updated: Today at 0117 UT X-ray Solar Flares 6-hr max: C6 0909 UT Jan16 24-hr: C6 0909 UT Jan16 explanation | more data Updated: Today at: …

Daily monitoring of solar flares, geomagnetic storms, Earth's aurora, and all forms of space weather.

The Boulder number (reported daily on SpaceWeather.com) is usually about 25% higher than the second official index, the "International Sunspot Number," published daily by the Solar Influences …

Jan 11, 2026 · SPACE WEATHER BALLOON DATA: Almost once a week, Spaceweather.com and the students of Earth to Sky Calculus fly space weather balloons to the stratosphere over California.

Current conditions and forecast of solar and geomagnetic storms, prepared by NOAA.

This list is based in part on "Large Solar Flares Since 1976" compiled by IPS Radio & Space Services. The most recent entry (Sept. 6, 2017) is highlighted in red.

Radio meteor rates listed under Space Weather Current Conditions on SpaceWeather.com are the maximum number of echoes per hour detected by an array of 88 - 110 MHz observing stations …

SPACE WEATHER BALLOON DATA: Almost once a week, Spaceweather.com and the students of Earth to Sky Calculus fly space weather balloons to the stratosphere over California.

Solar Smoke Rings -- (Science@NASA) The Sun puts on a dynamic show with a series of swirling coronal mass ejections Kamikaze Comets -- (Science@NASA) Many sungrazing comets discovered …

back to spaceweather.com Y ou learned it in school; astronomers say it all the time; it's The Truth. "Earth circles the Sun." Well... almost. Earth does travel around the Sun, but the path is not a perfect …