Solar Solar October, 2023 Solar Eclipse of the Moon passing near a solar prominence October, 2023 Solar Eclipse of the Moon passing near an active region on the Sun. October, 2023 Solar Eclipse just about to end... Incredible solar prominences... August 2022 Solar Proms August 2022 Solar Proms Solar prom: September, 2023 Solar eclipse: October, 2023 Solar eclipse: October, 2023 Sunspots are not entirely understood, but they appear black because they are slightly cooler than the surrounding areas... « ‹ of 3 › »