The largest star in the universe is so enormous that our Sun looks almost insignificant beside it! In this spectacular animated size comparison from En Pocas Palabras – Kurzgesagt, we travel through the cosmos to discover just how gigantic stars can become.
Starting with familiar objects and gradually moving toward some of the biggest stars known to astronomy, this beautifully illustrated video makes the unimaginable scale of space surprisingly easy to understand. Every comparison reveals something more astonishing than the last!
The Largest Star in the Universe: A Mind-Blowing Size Comparison
Our Sun is already enormous compared with Earth. Approximately 1.3 million Earth-sized spheres could fit inside it by volume. Yet in the wider universe, the Sun is far from being one of the largest stars.
The animation introduces different kinds of stars, from relatively small red dwarfs to massive giants and supergiants. As each new star appears, the scale becomes increasingly difficult to comprehend.
Some red supergiants, such as Betelgeuse, are hundreds of times wider than the Sun. Their immense outer layers stretch across distances that would encompass several planetary orbits in our Solar System.
Then come the truly extraordinary candidates, including Stephenson 2-18, a red supergiant whose estimated radius has been reported at more than 2,000 times that of the Sun.
If a star that large replaced our Sun, its outer atmosphere could extend beyond Saturn’s orbit. However, measuring such distant giants is difficult, and their estimated sizes remain uncertain.
The video also explores why stars grow to such incredible proportions and how their internal physics influences their size and evolution.
Why We Loved This Video
The colorful animation transforms complicated astronomy into an unforgettable visual journey. Instead of simply listing enormous numbers, Kurzgesagt lets viewers experience the scale through clever comparisons.
We especially love how each new star makes the previous one seem tiny. The progression builds a genuine sense of wonder about the extraordinary objects scattered throughout our galaxy and beyond.
Although this edition features Spanish narration, the visual storytelling makes the comparisons fascinating even for viewers who don’t speak Spanish.
