Activities: Universe

Orion

कठिनाई: ★ ★

Ranking the brightest stars of a constellation

कठिनाई: ★ ★

Making a constellation slide

कठिनाई: ★ ★

Brilliant stars on the screen by overhead projector

कठिनाई: ★

An estimate of the number of stars visible to photographs

कठिनाई: ★ ★