⭐ The life of a star

Unit 2 · Earth, Moon & stars · 10 min

Stars are born in nebulae and shine by nuclear fusion, turning hydrogen into helium. The Sun is about 4.6 billion years old; in about 5 billion years it will become a red giant, then a white dwarf. Much more massive stars end in a supernova, leaving a neutron star or a black hole.

Words in this lesson

• 恒星 (héng xīng) — star
• 黑洞 (hēi dòng) — black hole

Project: Draw a star life-cycle chart: one path for the Sun, one for massive stars.