If you're seeing this message, it means we're having trouble loading external resources on our website.

웹 필터가 올바르게 작동하지 않으면 도메인 *. kastatic.org*.kasandbox.org이 차단되어 있는지 확인하세요.

주요 내용

단원 2: Stars, black holes and galaxies

이 단원에 대하여

Our universe is defined by stars. This topic explores how they came to be and where they end up. This includes a discussion of black holes and galaxies.