A little knowledge. A more familiar sky.

Learn the night sky.

Recognise it. Remember it. Find it again.

Five questions · any topic

Your next small discovery2 min read

The Summer Triangle

One memorable shape connects three constellations.

A pattern across three constellations · schematic

Vega

The bright star in Lyra, the Lyre.

Deneb

The bright star at the tail of Cygnus, the Swan.

Altair

The bright star in Aquila, the Eagle.

Make it stick

A lyre, a swan, an eagle.

Vega → Lyra. Deneb → Cygnus. Altair → Aquila.

Got the idea?Hide the lesson and see what comes back.

Sources & further reading

A little, often

Short visits. Familiar names. Come back to the ones that need another look.

Practised: —
Due now: —
Remembering: —

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How remembering works

Correct answers come back after 1, 3, 7, 14 and 30 days. A missed answer returns in 10 minutes. Early practice is welcome, but doesn’t skip those intervals.

“Remembering” means three successful, spaced reviews—not a guarantee you’ll never forget.

From learning to looking

Try it under the sky

The Summer Triangle is an asterism: a recognisable star pattern, not a separate constellation.

Find Vega, Deneb and Altair in the Sky Map. Their orientation changes with your location and time.

Open Sky Map