THE STELLAR OBSERVATORY
Every point of light.
A story in the making.
Discover the stars that light our universe—and what happens when their light changes.
Preparing the stellar view…
ARTISTIC COLORS & SURFACE · SIZES NOT TO SCALE
DRAG TO ROTATE
CHOOSE A STELLAR PORTRAITSTARS & REMNANTS
SMALL FACTS. COSMIC PERSPECTIVE.
Learn more about stars · NASA ↗READING THE LIGHT
Color is a clue.
Mass shapes the story.
Blue stars have hotter surfaces than red stars. But temperature alone does not tell you how bright a star truly is: size matters too. How bright it looks from Earth also depends on distance.
Stellar colors and classes · NASA ↗COOLER SURFACEHOTTER SURFACE
Red → Orange → Yellow-white → White → Blue-white
Illustrative color guide, not a calibrated spectrum. The Sun’s light is essentially white.FROM STARDUST TO SOMETHING NEW
One beginning. Different endings.
A star’s initial mass strongly influences its life cycle. These are simplified paths; rotation, mass loss and companion stars can change the outcome.