Northern Lights May Light Up the Weekend Sky
A G2 geomagnetic storm watch is in effect for April 17–18, with a high-speed solar wind stream increasing the chance of auroras beyond the usual polar regions.
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Sky Guide for April 2026
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.
Moon Guide for April 2026
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?
Yom HaAtzmaut
Israel's Independence Day, also known as Yom Ha'atzmaut, marks the anniversary of the Declaration of Independence of Israel.