+Red giants are ancient [Stars](/wiki/star) that have consumed their core [Hydrogen](/wiki/hydrogen) fuel, causing them to dramatically expand. Their vast outer layers cool, radiating a deep orange glow as they near the end of their stellar lives.
+## See also
+- [White Dwarf](/wiki/white_dwarf)
+- [Supernova](/wiki/supernova)
+- [Stellar Evolution](/wiki/stellar_evolution)