Northern Lights May Light Up the Weekend Sky
A G2 geomagnetic storm watch is in effect for April 17–19, with a high-speed solar wind stream increasing the chance of auroras beyond the usual polar regions.
A G2 geomagnetic storm watch is in effect for April 17–19, with a high-speed solar wind stream increasing the chance of auroras beyond the usual polar regions.
What’s up in the day and night sky in April 2026, including a ghostly lunar glow, Moon-planet meetups, and the Lyrid meteor shower.
Discover the phases of the Moon in April 2026. Also: find Venus and the Pleiades near the Crescent Moon, and what is the opposite of the Harvest Moon effect?
The Sun shines directly on the Equator on the September equinox and the length of day and night is nearly equal, but not quite.